Re: [MBZ] Reluctant 300D 2.5T (1992)
Got a chance to check out the car this afternoon - the EGR valve responds with a snap when you open it with the mity-vac then pull the tube off. The intake valve flap actuator responds smoothly to vacuum. I found one vacuum tube loose and splitting where it connects to the controlling valve that feeds the ERG valve. I also found and removed the fuel tank vent valve - and heard a gentle whooshing when I pulled it off the hose. It seems to be open in both directions once it was off of the car - mity-vac in either pressure or suction puller air through freely. The vent tube comes directly out of the bottom of the tank in the '92 300D - not external tubes other than filler, and the feed/return lines. I decided to leave it off the car - wrapped a piece of latex tubing into a 360 degree loop, and put it in place of the vent valve. It should stay open all the time, and should at least slow down stuff trying to get into the tank. I'll fill it up, and see what happens next --- -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
OK Don wrote: I decided to leave it off the car - wrapped a piece of latex tubing into a 360 degree loop, and put it in place of the vent valve. It should stay open all the time, and should at least slow down stuff trying to get into the tank. Doesn't latex, out in the real world, have a lifespan of about a month? Can you hook up an old inline fuel filter where the valve was? Mitch. ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
Yes - I'll be watching to see if it cures the issue. If so, then I'll replace it with something - the inline fuel filter is a good idea. I suspect the Diesel fumes will dissolve the latex in short order. On Sat, May 8, 2010 at 5:30 PM, Mitch Haley m...@voyager.net wrote: OK Don wrote: I decided to leave it off the car - wrapped a piece of latex tubing into a 360 degree loop, and put it in place of the vent valve. It should stay open all the time, and should at least slow down stuff trying to get into the tank. Doesn't latex, out in the real world, have a lifespan of about a month? Can you hook up an old inline fuel filter where the valve was? Mitch. -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
I thought a normal cause of vent line failure was some kinda critter nesting in the thing... -- John W Reames jwrea...@comcast.net Home: +14106646986 Mobile: +14437915905 On May 8, 2010, at 17:32, OK Don okd...@gmail.com wrote: Got a chance to check out the car this afternoon - the EGR valve responds with a snap when you open it with the mity-vac then pull the tube off. The intake valve flap actuator responds smoothly to vacuum. I found one vacuum tube loose and splitting where it connects to the controlling valve that feeds the ERG valve. I also found and removed the fuel tank vent valve - and heard a gentle whooshing when I pulled it off the hose. It seems to be open in both directions once it was off of the car - mity-vac in either pressure or suction puller air through freely. The vent tube comes directly out of the bottom of the tank in the '92 300D - not external tubes other than filler, and the feed/return lines. I decided to leave it off the car - wrapped a piece of latex tubing into a 360 degree loop, and put it in place of the vent valve. It should stay open all the time, and should at least slow down stuff trying to get into the tank. I'll fill it up, and see what happens next --- -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
I've don't think you can equate *anything* meaningful from the whoosh - it seems to happen more when the tank is closer to empty but I *know* my tank is free of algae - ]] It also happens on my gas cars although I'm not sure why. Good luck - LarryT 91 300D OilAnalysis Time? Looking for Weber Parts or Porsche Posters? www.youroil.net -- From: OK Don okd...@gmail.com Sent: Wednesday, May 05, 2010 10:47 PM To: Mercedes Discussion List mercedes@okiebenz.com Subject: Re: [MBZ] Reluctant 300D 2.5T (1992) I didn't open the filler till after I'd replaced the filter, so the test was invalid --- On Wed, May 5, 2010 at 9:44 AM, Curt Raymond curtlud...@yahoo.com wrote: Something in the line maybe? Next time instead of replacing the filters just remove the line and put it back. Perhaps something gets pulled up against the intake in the tank and falls off when you release the line. Maybe an occasionally sticking tank vent? You didn't mention opening the filler. -Curt -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
Hi Don, My '91 300D did the same thing when I 1st bought it. I also changed the filters, etc and mine ran poorly when being started after sitting overnight. It had clouds of white smoke, would not rev and hardly creeped along - but it would idle normally. I ended up buying some stuff to break up the carbon that had built up in head - as was suggested my Marshall and others on the list. My wife also started a new job where she drove at 70mph for 50 miles each way. After 4 treatments of the juice to breakup the carbon we never had another problem - after nearly 80K miles. The juice was called something like Forex 400 I believe. I wasn't able to find it unfortunately. But a search of cylinder carbon removal chemical yielded numerous hits.Here's a article that might help. http://www.hemmings.com/mus/stories/2008/01/01/hmn_feature19.html and: http://www.motorwatch.com/automotivebible/auto_motive_bible/CarbonRemoval.pdf OilAnalysis Time? Looking for Weber Parts or Porsche Posters? www.youroil.net -- From: OK Don okd...@gmail.com Sent: Tuesday, May 04, 2010 8:15 PM To: Mercedes Discussion List Mercedes@okiebenz.com Subject: [MBZ] Reluctant 300D 2.5T (1992) This is the car that acted like it was fuel starved months ago - or something was wrong with the fuel system. The first episode it suddenly lost power on the highway, ended up running about 20mph at full throttle, but idled fine. It was smoking like crazy when it was moving the car. As a first attempt at a cure, after many suggestions from you fine folk, I replaced the fuel filters. The car drove great after that. About 1400 miles later, it did the same thing on the way to work. I limped the last two miles in, got a friend to take me to a parts place at lunch time, bought new filters and a can of Diesel Purge, changed the filters, and the car ran fine again. I decided that the tank needs to be cleaned, but that I could drive approx. 1000 miles between filters until I got around to draining and cleaning the tank. Our daughter was driving the car today, with only 200 miles on a new canister fuel filter, and the car started shifting hard, like a vacuum line was off, then lost power, would only go 10 mph. She parked it on a residential street, walked the last mile to work, and called us to get the car. Since I had only changed the Canister filter last time, I took a new in-line filter, changed it, and drove the car home. It ran fine. I had saved the last canister filter, and had the old in-line filter, so I cut them open to see how full of algae/bacteria they were. They didn't look bad at all. Definitely not enough stuff in there to stop the flow of fuel. There were only a few grains (6 to 8) of black stuff in the in-line filter. So I'm thinking fuel is not the issue, and changing the filters is not fixing it. I'm wondering about the air metering valve assembly - if it's not getting enough air, the effect would be similar to not getting enough fuel, and would account for the smoke I had. (Daughter didn't notice any). This intermittent stuff is sure a pain to find/fix!!! This is the car that I got from Kaleb after he'd had the IP fixed - -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
This car starts and runs fine in the morning - the issue happens suddenly while you're driving along --- On Thu, May 6, 2010 at 8:06 PM, LarryT l02tur...@comcast.net wrote: Hi Don, My '91 300D did the same thing when I 1st bought it. I also changed the filters, etc and mine ran poorly when being started after sitting overnight. It had clouds of white smoke, would not rev and hardly creeped along - but it would idle normally. I ended up buying some stuff to break up the carbon that had built up in head - as was suggested my Marshall and others on the list. My wife also started a new job where she drove at 70mph for 50 miles each way. After 4 treatments of the juice to breakup the carbon we never had another problem - after nearly 80K miles. The juice was called something like Forex 400 I believe. I wasn't able to find it unfortunately. But a search of cylinder carbon removal chemical yielded numerous hits.Here's a article that might help. http://www.hemmings.com/mus/stories/2008/01/01/hmn_feature19.html and: http://www.motorwatch.com/automotivebible/auto_motive_bible/CarbonRemoval.pdf -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
So, with the half full, how much does it take to fill it? Wilton - Original Message - From: OK Don okd...@gmail.com To: Mercedes Discussion List mercedes@okiebenz.com Sent: Wednesday, May 05, 2010 10:44 PM Subject: Re: [MBZ] Reluctant 300D 2.5T (1992) I usually associate an air leak in the supply lines with a lot cranking at start-up time. I bought a '76 300D once from a guy who tore down the engine because of a hard starting. I bought it for the rust-free body. Transferred the factory re-man engine from my rusting body into this one, and instantly had a hard-to-start car. I found a small rubbed hole where the fuel line came up into the engine compartment. Fixed it with a splice of fuel tubing, and it started instantly. Now, a collapsing tank would be a real pain. I usually fill when the gauge gets to half - so don't really have an indication of how much it holds today. The tank is at half now - when this last incident occurred. I think I'll start with the vent system. On Wed, May 5, 2010 at 5:12 AM, John Reames jwrea...@comcast.net wrote: The fuel pump is potent enough to suck air into the lines when the tank vent is sufficiently plugged. You may never see a drop of fuel weeping and still suck in air (there is a slight difference between the viscosities of air and diesel fuel. The alternative is that the fuel tank can collapse... -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
Around 9 gallons. On Thu, May 6, 2010 at 8:59 AM, WILTON wilt...@nc.rr.com wrote: So, with the half full, how much does it take to fill it? Wilton -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
So, it's not crushed much, if any - - - yet. ; Wilton - Original Message - From: OK Don okd...@gmail.com To: Mercedes Discussion List mercedes@okiebenz.com Sent: Thursday, May 06, 2010 9:27 PM Subject: Re: [MBZ] Reluctant 300D 2.5T (1992) Around 9 gallons. On Thu, May 6, 2010 at 8:59 AM, WILTON wilt...@nc.rr.com wrote: So, with the half full, how much does it take to fill it? Wilton -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
I'm not driving it again till I do something about the situation. If I get time thsi weekend (Mother's Day and daughter's BD), I'll attack the EGR system and the tank vent. On Thu, May 6, 2010 at 9:00 PM, WILTON wilt...@nc.rr.com wrote: So, it's not crushed much, if any - - - yet. ; -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
The fuel pump is potent enough to suck air into the lines when the tank vent is sufficiently plugged. You may never see a drop of fuel weeping and still suck in air (there is a slight difference between the viscosities of air and diesel fuel. The alternative is that the fuel tank can collapse... -- John W Reames jwrea...@comcast.net Home: +14106646986 Mobile: +14437915905 On May 4, 2010, at 21:49, OK Don okd...@gmail.com wrote: I've noticed the whoosh when removing the filler cap pn one of the cars on occasion, but now I couldn't tell you which one it was. I haven't cleaned the tank out yet -- I don't see bubbles in the line - it doesn't act like a leaking line - it acts like it's either starved for fuel or air. On Tue, May 4, 2010 at 8:38 PM, John Reames jwrea...@comcast.net wrote: Umm when you pull the cap off, does it come right off, or does it take some force to actually *pull* the cap off? (possibly accompanied by anninrush of air)? If so, check the tank vent line... When you cleaned the tank, what did the filter in the tank look like? What's the flow through the lines themselves look like? Both at the body lines and at the line into the fuel filter etc. When it's running do you see any air bubbles in the Lin -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
This might be a wild, outside chance... Has someone removed the little flow restrictor between the vacuum pump and the shutoff circuit? If somehow the shutdown is getting too much vacuum, it can restrict RPM. THis does not explain the sudden on of the situation, or why opening the fuel system cures it. But, it is easy enough to pull the vacuum line off the shutoff and try that for 2K or so. Plugged tank vent explains why the situation is ok after opening the fuel system. A less desirable possibility is the governor on the pump. I had one on a 603 that would suddenly go slow. When restarted, it would be ok, then go slow. In that situation, the governor deteriorated so fast that within 30 min or so, the engine would fire a few times, and the governor would slam the rack shut. So, the result was that the engine would start normally, fire for a revolution or two and then die. I've noticed the whoosh when removing the filler cap pn one of the cars on occasion, but now I couldn't tell you which one it was. I haven't cleaned the tank out yet -- I don't see bubbles in the line - it doesn't act like a leaking line - it acts like it's either starved for fuel or air. On Tue, May 4, 2010 at 8:38 PM, John Reames jwrea...@comcast.net wrote: Umm when you pull the cap off, does it come right off, or does it take some force to actually *pull* the cap off? (possibly accompanied by anninrush of air)? If so, check the tank vent line... When you cleaned the tank, what did the filter in the tank look like? What's the flow through the lines themselves look like? Both at the body lines and at the line into the fuel filter etc. When it's running do you see any air bubbles in the Lin -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
Something in the line maybe? Next time instead of replacing the filters just remove the line and put it back. Perhaps something gets pulled up against the intake in the tank and falls off when you release the line. Maybe an occasionally sticking tank vent? You didn't mention opening the filler. -Curt Date: Tue, 4 May 2010 19:15:53 -0500 From: OK Don okd...@gmail.com To: Mercedes Discussion List Mercedes@okiebenz.com Subject: [MBZ] Reluctant 300D 2.5T (1992) Message-ID: j2q437bc981005041715k8f88993fz7f04ae3733b3b...@mail.gmail.com Content-Type: text/plain; charset=ISO-8859-1 This is the car that acted like it was fuel starved months ago - or something was wrong with the fuel system. The first episode it suddenly lost power on the highway, ended up running about 20mph at full throttle, but idled fine. It was smoking like crazy when it was moving the car. As a first attempt at a cure, after many suggestions from you fine folk, I replaced the fuel filters. The car drove great after that. About 1400 miles later, it did the same thing on the way to work. I limped the last two miles in, got a friend to take me to a parts place at lunch time, bought new filters and a can of Diesel Purge, changed the filters, and the car ran fine again. I decided that the tank needs to be cleaned, but that I could drive approx. 1000 miles between filters until I got around to draining and cleaning the tank. Our daughter was driving the car today, with only 200 miles on a new canister fuel filter, and the car started shifting hard, like a vacuum line was off, then lost power, would only go 10 mph. She parked it on a residential street, walked the last mile to work, and called us to get the car. Since I had only changed the Canister filter last time, I took a new in-line filter, changed it, and drove the car home. It ran fine. I had saved the last canister filter, and had the old in-line filter, so I cut them open to see how full of algae/bacteria they were. They didn't look bad at all. Definitely not enough stuff in there to stop the flow of fuel. There were only a few grains (6 to 8) of black stuff in the in-line filter. So I'm thinking fuel is not the issue, and changing the filters is not fixing it. I'm wondering about the air metering valve assembly - if it's not getting enough air, the effect would be similar to not getting enough fuel, and would account for the smoke I had. (Daughter didn't notice any). This intermittent stuff is sure a pain to find/fix!!! This is the car that I got from Kaleb after he'd had the IP fixed - -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
I usually associate an air leak in the supply lines with a lot cranking at start-up time. I bought a '76 300D once from a guy who tore down the engine because of a hard starting. I bought it for the rust-free body. Transferred the factory re-man engine from my rusting body into this one, and instantly had a hard-to-start car. I found a small rubbed hole where the fuel line came up into the engine compartment. Fixed it with a splice of fuel tubing, and it started instantly. Now, a collapsing tank would be a real pain. I usually fill when the gauge gets to half - so don't really have an indication of how much it holds today. The tank is at half now - when this last incident occurred. I think I'll start with the vent system. On Wed, May 5, 2010 at 5:12 AM, John Reames jwrea...@comcast.net wrote: The fuel pump is potent enough to suck air into the lines when the tank vent is sufficiently plugged. You may never see a drop of fuel weeping and still suck in air (there is a slight difference between the viscosities of air and diesel fuel. The alternative is that the fuel tank can collapse... -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
That's easy enough to check -- and it doesn't sound like the governor is likely, I hope. On Wed, May 5, 2010 at 9:08 AM, Dieselhead 126die...@gmail.com wrote: This might be a wild, outside chance... Has someone removed the little flow restrictor between the vacuum pump and the shutoff circuit? If somehow the shutdown is getting too much vacuum, it can restrict RPM. THis does not explain the sudden on of the situation, or why opening the fuel system cures it. But, it is easy enough to pull the vacuum line off the shutoff and try that for 2K or so. Plugged tank vent explains why the situation is ok after opening the fuel system. A less desirable possibility is the governor on the pump. I had one on a 603 that would suddenly go slow. When restarted, it would be ok, then go slow. In that situation, the governor deteriorated so fast that within 30 min or so, the engine would fire a few times, and the governor would slam the rack shut. So, the result was that the engine would start normally, fire for a revolution or two and then die. -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
I didn't open the filler till after I'd replaced the filter, so the test was invalid --- On Wed, May 5, 2010 at 9:44 AM, Curt Raymond curtlud...@yahoo.com wrote: Something in the line maybe? Next time instead of replacing the filters just remove the line and put it back. Perhaps something gets pulled up against the intake in the tank and falls off when you release the line. Maybe an occasionally sticking tank vent? You didn't mention opening the filler. -Curt -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Reluctant 300D 2.5T (1992)
This is the car that acted like it was fuel starved months ago - or something was wrong with the fuel system. The first episode it suddenly lost power on the highway, ended up running about 20mph at full throttle, but idled fine. It was smoking like crazy when it was moving the car. As a first attempt at a cure, after many suggestions from you fine folk, I replaced the fuel filters. The car drove great after that. About 1400 miles later, it did the same thing on the way to work. I limped the last two miles in, got a friend to take me to a parts place at lunch time, bought new filters and a can of Diesel Purge, changed the filters, and the car ran fine again. I decided that the tank needs to be cleaned, but that I could drive approx. 1000 miles between filters until I got around to draining and cleaning the tank. Our daughter was driving the car today, with only 200 miles on a new canister fuel filter, and the car started shifting hard, like a vacuum line was off, then lost power, would only go 10 mph. She parked it on a residential street, walked the last mile to work, and called us to get the car. Since I had only changed the Canister filter last time, I took a new in-line filter, changed it, and drove the car home. It ran fine. I had saved the last canister filter, and had the old in-line filter, so I cut them open to see how full of algae/bacteria they were. They didn't look bad at all. Definitely not enough stuff in there to stop the flow of fuel. There were only a few grains (6 to 8) of black stuff in the in-line filter. So I'm thinking fuel is not the issue, and changing the filters is not fixing it. I'm wondering about the air metering valve assembly - if it's not getting enough air, the effect would be similar to not getting enough fuel, and would account for the smoke I had. (Daughter didn't notice any). This intermittent stuff is sure a pain to find/fix!!! This is the car that I got from Kaleb after he'd had the IP fixed - -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
Are you getting vacuum on the fuel tank? Changing the filter would release the vacuum! -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
I started to declare nope, but then realized that I pulled the fuel cap off to check for cavuum ater I had replace the filter, but I didn't notice anything other the Diesel running down my hands as I replaced the filter. On Tue, May 4, 2010 at 7:52 PM, Jim Cathey j...@windwireless.net wrote: Are you getting vacuum on the fuel tank? Changing the filter would release the vacuum! -- Jim -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
Umm when you pull the cap off, does it come right off, or does it take some force to actually *pull* the cap off? (possibly accompanied by anninrush of air)? If so, check the tank vent line... When you cleaned the tank, what did the filter in the tank look like? What's the flow through the lines themselves look like? Both at the body lines and at the line into the fuel filter etc. When it's running do you see any air bubbles in the Lin -- John W Reames jwrea...@comcast.net Home: +14106646986 Mobile: +14437915905 On May 4, 2010, at 20:15, OK Don okd...@gmail.com wrote: This is the car that acted like it was fuel starved months ago - or something was wrong with the fuel system. The first episode it suddenly lost power on the highway, ended up running about 20mph at full throttle, but idled fine. It was smoking like crazy when it was moving the car. As a first attempt at a cure, after many suggestions from you fine folk, I replaced the fuel filters. The car drove great after that. About 1400 miles later, it did the same thing on the way to work. I limped the last two miles in, got a friend to take me to a parts place at lunch time, bought new filters and a can of Diesel Purge, changed the filters, and the car ran fine again. I decided that the tank needs to be cleaned, but that I could drive approx. 1000 miles between filters until I got around to draining and cleaning the tank. Our daughter was driving the car today, with only 200 miles on a new canister fuel filter, and the car started shifting hard, like a vacuum line was off, then lost power, would only go 10 mph. She parked it on a residential street, walked the last mile to work, and called us to get the car. Since I had only changed the Canister filter last time, I took a new in-line filter, changed it, and drove the car home. It ran fine. I had saved the last canister filter, and had the old in-line filter, so I cut them open to see how full of algae/bacteria they were. They didn't look bad at all. Definitely not enough stuff in there to stop the flow of fuel. There were only a few grains (6 to 8) of black stuff in the in-line filter. So I'm thinking fuel is not the issue, and changing the filters is not fixing it. I'm wondering about the air metering valve assembly - if it's not getting enough air, the effect would be similar to not getting enough fuel, and would account for the smoke I had. (Daughter didn't notice any). This intermittent stuff is sure a pain to find/fix!!! This is the car that I got from Kaleb after he'd had the IP fixed - -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
I've noticed the whoosh when removing the filler cap pn one of the cars on occasion, but now I couldn't tell you which one it was. I haven't cleaned the tank out yet -- I don't see bubbles in the line - it doesn't act like a leaking line - it acts like it's either starved for fuel or air. On Tue, May 4, 2010 at 8:38 PM, John Reames jwrea...@comcast.net wrote: Umm when you pull the cap off, does it come right off, or does it take some force to actually *pull* the cap off? (possibly accompanied by anninrush of air)? If so, check the tank vent line... When you cleaned the tank, what did the filter in the tank look like? What's the flow through the lines themselves look like? Both at the body lines and at the line into the fuel filter etc. When it's running do you see any air bubbles in the Lin -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
It's not starved for air, it's not possible. Check to make sure the air flow meter flap moves -- it should be open all the way with the engine running at idle. If it sticks, it's a problem, but otherwise not. Verify that the EGR and turbo boost control vacuum transducers hold vac -- if they leak, you won't get anything but limp mode which is very slow. Usually not 20 mph, though. Check that the actuators for the EGR and boost control work, as well, and that the EGR is not sticking open. Use a MityVac and pull it open, then pull the hose and see that it snaps fully closed instantly. Any hangup in closing will give you fits. Most especially check that EGR valve -- when the one on my Volvo TD stuck, the car would produce absolutely fantastic amount of black smoke, make very funny rattling noises, and essentially refuse to move. Reason is that on a diesel, the EGR is open pretty much all the way at idle, and closes down as load (not rpm) increases -- it's there to reduce flame temperature and hence NOX emissions, and the flame temp is highest at lean conditions. Goes down by itself at high load (high fuel delivery rate), so if the valve sticks open, it will idle just fine, but fall on it's face when you step on the pedal because the much higher exhaust pressure will smother the fire, so to speak. This will be complicated in the 92 by the computer control of the boost, as a failed EGR will cause the computer to dump the boost and you can't drive out of the condition like you could on my old Volvo -- once the rpm came up and the load lightened, it would run normally, and sooner or later the valve would close by itlself. The car behind could vanish in the smoke cloud, I kid you not. Very serious smoke. If you were getting huge clouds of inky smoke and no power, check that EGR. I don't think you can do what I did, simply plate it off, as the computer will dump the boost and you will be driving without a turbo. Peter ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Reluctant 300D 2.5T (1992)
I'd say you didn't have too much of a vacuum if the diesel ran down your hands... Btw, needlenose vise-grips make a darn good pinchoff tool for swapping filters. I have a pair of them in the ammo can I'm the trunk (along with a gp fuse, some new regular fuses, half a dozen nitrile gloves, a bunch of good strong zipties and a 4-way screwdriver... I don't remember everything else that's there, but I remember that the 617 canister filter will fit in a .30 can and the 60x ones need a .50 can -- John W Reames jwrea...@comcast.net Home: +14106646986 Mobile: +14437915905 On May 4, 2010, at 21:07, OK Don okd...@gmail.com wrote: I started to declare nope, but then realized that I pulled the fuel cap off to check for cavuum ater I had replace the filter, but I didn't notice anything other the Diesel running down my hands as I replaced the filter. On Tue, May 4, 2010 at 7:52 PM, Jim Cathey j...@windwireless.net wrote: Are you getting vacuum on the fuel tank? Changing the filter would release the vacuum! -- Jim -- OK Don Panic! (the national past time). ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
