Re: [MBZ] 300D 2.5 Turbo injector nailing?
Thank you so much Fred but I already have the tool! Sent from my iPhone > On Jun 27, 2024, at 2:37 PM, Frederick Moir via Mercedes > wrote: > > Dimitri. > I have the socket for the valves on a 60x injection pump. > Yours if you want it. > Fred. > >> On Thu, Jun 27, 2024 at 12:41 PM Curt Raymond via Mercedes < >> mercedes@okiebenz.com> wrote: >> >> I did the delivery valve seals on my '84 190D and IIRC the injection pump >> seemed louder after doing the job than before. Also as I remember (and it's >> been probably 10+ years) that noise declined over time. >> >> I'd throw a bottle of motor oil or ATF into the fuel tank and run the car >> a little to see what happens. I wonder if maybe the leaking delivery valves >> get quieter because of some looseness and the tightening of them makes them >> louder. >> >> Almost 20 years ago I paid a "trusted mechanic" to replace dv seals on my >> '85 190D. At some point he shifted one of the valves which then caused the >> engine to try to run away. He had to bring in a specialist to get it right >> again. I ended up paying him something like $1000 on a like $200 job. >> That's why I did it myself on the '84 190D. Its not a hard job, but you >> need to go slow and keep your wits about you... >> >> That was when I decided "Why pay somebody to screw up something I can >> screw up perfectly well myself?" >> >> -Curt >> >> >> On Wednesday, June 26, 2024 at 08:12:21 PM EDT, Dimitri Seretakis via >> Mercedes wrote: >> >> >> >> >> >> To keep things less confusing, I’m asking this question separately from >> the idling issue which Kaleb identified as the voltage overload relay. >> >> So I took my car to the shop three weeks ago in order to fix a broken >> lower ball joint- stupid Boston potholes. They ended up rebuilding the >> whole front suspension- replaced lower control arms, shocks etc. Car drives >> great now. >> While it was there I asked them to replace the delivery valve seals and >> washers since I just don’t have time to do it. Now the car makes a nailing >> noise at idle. They say it could be the injectors. I’m wondering if they >> screwed up the delivery valve job. It is actually a very good shop so I >> don’t want to just jump to conclusions of incompetence because they really >> are a very competent and exceptional shop. >> >> Sent from my iPhone >> >> ___ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> >> ___ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> > > -- > Fred Moir > Lynn MA > Diesel preferred > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > ___ http://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] 300D 2.5 Turbo injector nailing?
It can take some time to get the air out of the lines, and you will get injector knock (which is really late opening of the nozzle) until it's all gone, but it shouldn't take very long. There are two seals on the delivery valves -- the copper washer at the bottom and a rubber o-ring at the top that seals the fuel reservoir. That is what was leaking on yours, but to replace it you must remove the delivery valves, and hence must then replace the copper seal. It's difficult to get the copper seal exactly sealed, I've done a few and had to repeat a couple. If it leaks, there is no residual pressure in the line to the injector, and the fuel will be injected late as the nozzle will not "pop" until it's at 1500 psi or so. Very far down the power stroke and it goes "bang" instead of burning cleanly. You can check by cracking the lines at the injectors one at a time while it's idling. If the noise goes away when you crack the injector line loose, that pressure valve copper seal is leaking, and the copper seal probably needs to be replaced. They are NOT very tight, I seem to remember the tightening sequence being 25 ft/lbs, 25 ft/lbs again without loosening, then 30 ft/lbs after a few minutes settling time, again without loosening. Use a good torque wrench, going by feel will usually result in scoring the copper washer and it leaks, or distorting the fuel pressure chamber and getting a leak. -Original Message- From: Mercedes Discussion List Sent: Jun 27, 2024 11:41 AM To: Mercedes Discussion List Cc: Curt Raymond Subject: Re: [MBZ] 300D 2.5 Turbo injector nailing? I did the delivery valve seals on my '84 190D and IIRC the injection pump seemed louder after doing the job than before. Also as I remember (and it's been probably 10+ years) that noise declined over time. I'd throw a bottle of motor oil or ATF into the fuel tank and run the car a little to see what happens. I wonder if maybe the leaking delivery valves get quieter because of some looseness and the tightening of them makes them louder. Almost 20 years ago I paid a "trusted mechanic" to replace dv seals on my '85 190D. At some point he shifted one of the valves which then caused the engine to try to run away. He had to bring in a specialist to get it right again. I ended up paying him something like $1000 on a like $200 job. That's why I did it myself on the '84 190D. Its not a hard job, but you need to go slow and keep your wits about you... That was when I decided "Why pay somebody to screw up something I can screw up perfectly well myself?" -Curt On Wednesday, June 26, 2024 at 08:12:21 PM EDT, Dimitri Seretakis via Mercedes wrote: To keep things less confusing, I’m asking this question separately from the idling issue which Kaleb identified as the voltage overload relay. So I took my car to the shop three weeks ago in order to fix a broken lower ball joint- stupid Boston potholes. They ended up rebuilding the whole front suspension- replaced lower control arms, shocks etc. Car drives great now. While it was there I asked them to replace the delivery valve seals and washers since I just don’t have time to do it. Now the car makes a nailing noise at idle. They say it could be the injectors. I’m wondering if they screwed up the delivery valve job. It is actually a very good shop so I don’t want to just jump to conclusions of incompetence because they really are a very competent and exceptional shop. Sent from my iPhone ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 300D 2.5 Turbo injector nailing?
Dimitri. I have the socket for the valves on a 60x injection pump. Yours if you want it. Fred. On Thu, Jun 27, 2024 at 12:41 PM Curt Raymond via Mercedes < mercedes@okiebenz.com> wrote: > I did the delivery valve seals on my '84 190D and IIRC the injection pump > seemed louder after doing the job than before. Also as I remember (and it's > been probably 10+ years) that noise declined over time. > > I'd throw a bottle of motor oil or ATF into the fuel tank and run the car > a little to see what happens. I wonder if maybe the leaking delivery valves > get quieter because of some looseness and the tightening of them makes them > louder. > > Almost 20 years ago I paid a "trusted mechanic" to replace dv seals on my > '85 190D. At some point he shifted one of the valves which then caused the > engine to try to run away. He had to bring in a specialist to get it right > again. I ended up paying him something like $1000 on a like $200 job. > That's why I did it myself on the '84 190D. Its not a hard job, but you > need to go slow and keep your wits about you... > > That was when I decided "Why pay somebody to screw up something I can > screw up perfectly well myself?" > > -Curt > > > On Wednesday, June 26, 2024 at 08:12:21 PM EDT, Dimitri Seretakis via > Mercedes wrote: > > > > > > To keep things less confusing, I’m asking this question separately from > the idling issue which Kaleb identified as the voltage overload relay. > > So I took my car to the shop three weeks ago in order to fix a broken > lower ball joint- stupid Boston potholes. They ended up rebuilding the > whole front suspension- replaced lower control arms, shocks etc. Car drives > great now. > While it was there I asked them to replace the delivery valve seals and > washers since I just don’t have time to do it. Now the car makes a nailing > noise at idle. They say it could be the injectors. I’m wondering if they > screwed up the delivery valve job. It is actually a very good shop so I > don’t want to just jump to conclusions of incompetence because they really > are a very competent and exceptional shop. > > Sent from my iPhone > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > -- Fred Moir Lynn MA Diesel preferred ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 300D 2.5 Turbo injector nailing?
I did the delivery valve seals on my '84 190D and IIRC the injection pump seemed louder after doing the job than before. Also as I remember (and it's been probably 10+ years) that noise declined over time. I'd throw a bottle of motor oil or ATF into the fuel tank and run the car a little to see what happens. I wonder if maybe the leaking delivery valves get quieter because of some looseness and the tightening of them makes them louder. Almost 20 years ago I paid a "trusted mechanic" to replace dv seals on my '85 190D. At some point he shifted one of the valves which then caused the engine to try to run away. He had to bring in a specialist to get it right again. I ended up paying him something like $1000 on a like $200 job. That's why I did it myself on the '84 190D. Its not a hard job, but you need to go slow and keep your wits about you... That was when I decided "Why pay somebody to screw up something I can screw up perfectly well myself?" -Curt On Wednesday, June 26, 2024 at 08:12:21 PM EDT, Dimitri Seretakis via Mercedes wrote: To keep things less confusing, I’m asking this question separately from the idling issue which Kaleb identified as the voltage overload relay. So I took my car to the shop three weeks ago in order to fix a broken lower ball joint- stupid Boston potholes. They ended up rebuilding the whole front suspension- replaced lower control arms, shocks etc. Car drives great now. While it was there I asked them to replace the delivery valve seals and washers since I just don’t have time to do it. Now the car makes a nailing noise at idle. They say it could be the injectors. I’m wondering if they screwed up the delivery valve job. It is actually a very good shop so I don’t want to just jump to conclusions of incompetence because they really are a very competent and exceptional shop. Sent from my iPhone ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 300D 2.5 Turbo injector nailing?
They were leaking and the shop replaced them. Now there is a nailing noise. My question is could something have gone wrong? Sent from my iPhone > On Jun 27, 2024, at 7:16 AM, Peter Frederick via Mercedes > wrote: > > Leaking delivery valve seal. > > I wouldn't change those unless you have a fuel leak from a bad o-ring or > injector knock at idle, they are a real pain. They leak if they are either > too loose or too tight, and the body of the pump is aluminum, too tight and > you can damage it. > > Peter > > -Original Message- > From: Mercedes Discussion List > Sent: Jun 26, 2024 7:12 PM > To: Mercedes Discussion List > Cc: Dimitri Seretakis > Subject: [MBZ] 300D 2.5 Turbo injector nailing? > > To keep things less confusing, I’m asking this question separately from > the idling issue which Kaleb identified as the voltage overload relay. > > So I took my car to the shop three weeks ago in order to fix a broken lower > ball joint- stupid Boston potholes. They ended up rebuilding the whole front > suspension- replaced lower control arms, shocks etc. Car drives great now. > While it was there I asked them to replace the delivery valve seals and > washers since I just don’t have time to do it. Now the car makes a > nailing noise at idle. They say it could be the injectors. I’m > wondering if they screwed up the delivery valve job. It is actually a very > good shop so I don’t want to just jump to conclusions of incompetence > because they really are a very competent and exceptional shop. > > Sent from my iPhone > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 300D 2.5 Turbo injector nailing?
Leaking delivery valve seal. I wouldn't change those unless you have a fuel leak from a bad o-ring or injector knock at idle, they are a real pain. They leak if they are either too loose or too tight, and the body of the pump is aluminum, too tight and you can damage it. Peter -Original Message- From: Mercedes Discussion List Sent: Jun 26, 2024 7:12 PM To: Mercedes Discussion List Cc: Dimitri Seretakis Subject: [MBZ] 300D 2.5 Turbo injector nailing? To keep things less confusing, I’m asking this question separately from the idling issue which Kaleb identified as the voltage overload relay. So I took my car to the shop three weeks ago in order to fix a broken lower ball joint- stupid Boston potholes. They ended up rebuilding the whole front suspension- replaced lower control arms, shocks etc. Car drives great now. While it was there I asked them to replace the delivery valve seals and washers since I just don’t have time to do it. Now the car makes a nailing noise at idle. They say it could be the injectors. I’m wondering if they screwed up the delivery valve job. It is actually a very good shop so I don’t want to just jump to conclusions of incompetence because they really are a very competent and exceptional shop. Sent from my iPhone ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] 300D 2.5 Turbo injector nailing?
To keep things less confusing, I’m asking this question separately from the idling issue which Kaleb identified as the voltage overload relay. So I took my car to the shop three weeks ago in order to fix a broken lower ball joint- stupid Boston potholes. They ended up rebuilding the whole front suspension- replaced lower control arms, shocks etc. Car drives great now. While it was there I asked them to replace the delivery valve seals and washers since I just don’t have time to do it. Now the car makes a nailing noise at idle. They say it could be the injectors. I’m wondering if they screwed up the delivery valve job. It is actually a very good shop so I don’t want to just jump to conclusions of incompetence because they really are a very competent and exceptional shop. Sent from my iPhone ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
