Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
On 17/05/2013 7:32 PM, Rick Knoble wrote: On May 12, 2013, at 8:25 PM, Max meadedil...@bellsouth.net wrote: Try replacing the oil pressure sensor first. They are electronic and do go bad. I changed the sender out today. No change. Will do the o-rings tomorrow. I hope I haven't done any damage by running it with low oil pressure. Rick Sent from my iPhone ___ Try putting a test gauge on and see if there is actually pressure there. Could still be in the wiring of the gauge itself? You can get mechanic's tools that are intended for the purpose or make your own from a mechanical oil pressure gauge. My son the mechanic has a snap on oil gauge. I have a mechanical pressure gauge and a small diameter hydraulic hose that I have used on occasion. Randy ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
On May 21, 2013, at 11:15 AM, Randy Bennell rbenn...@bennell.ca wrote: Try putting a test gauge on and see if there is actually pressure there. Will try that when I get another day off. Rick Sent from my iPhone ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
if oil pressure is low at idle take the oil filler cap off and see how much blow by you have. On Fri, May 17, 2013 at 10:12 PM, Chris James c_ja...@gmx.com wrote: OM60x Min specs I believe are: 0.3 bar at idle and at least 3 bar at 3000 rpm. Not sure what a 2.5 runs @ 60. 2200 RPM? So as long as it's pegged by 80 your OK! :-) Seriously though, from browsing the archive I'd replace both the o-rings oil filter to rule out any sealing/gasket issues. IF that doesn't change anything you need to explore furtherbad relief valves (filter and/or pump), worn oil pump, pickup screen blockages ect Good luck! On 5/17/2013 8:32 PM, Rick Knoble wrote: I changed the sender out today. No change. Will do the o-rings tomorrow. I hope I haven't done any damage by running it with low oil pressure. Rick -- Chris J. __**_ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/**archive/http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.comhttp://mail.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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
On May 12, 2013, at 8:25 PM, Max meadedil...@bellsouth.net wrote: Try replacing the oil pressure sensor first. They are electronic and do go bad. I changed the sender out today. No change. Will do the o-rings tomorrow. I hope I haven't done any damage by running it with low oil pressure. Rick Sent from my iPhone ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
On Fri, 17 May 2013 19:32:31 -0500 Rick Knoble rickkno...@hotmail.com wrote: On May 12, 2013, at 8:25 PM, Max meadedil...@bellsouth.net wrote: Try replacing the oil pressure sensor first. They are electronic and do go bad. I changed the sender out today. No change. Will do the o-rings tomorrow. I hope I haven't done any damage by running it with low oil pressure. What is the spec for oil pressure on the 2.5 turbodiesel? For OM61x engines, the spec is greater than 0.5 bar and pegged when the throttle is pressed. Craig ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
On the turbos, minimum 0.5 bar at idle hot, must peg the gauge at 1500 rpm. Typically you won't see less than 2 bar at idle unless you are stuck in a traffic jam on a hot summer day with the AC on. 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
On Fri, 17 May 2013 22:09:35 -0500 Peter Frederick psf...@earthlink.net wrote: On the turbos, minimum 0.5 bar at idle hot, must peg the gauge at 1500 rpm. Typically you won't see less than 2 bar at idle unless you are stuck in a traffic jam on a hot summer day with the AC on. Is that for W124 turbos, as well as W123 turbos? Craig ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
Should be about the same -- the reason you normally see 2 bar is that the cooling spray jets that spray oil onto the bottom of the pistons open at 2 bar. Unless you have a really worn engine or a dying oil pump, there is enough flow to open the jets at idle. 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
OM60x Min specs I believe are: 0.3 bar at idle and at least 3 bar at 3000 rpm. Not sure what a 2.5 runs @ 60. 2200 RPM? So as long as it's pegged by 80 your OK! :-) Seriously though, from browsing the archive I'd replace both the o-rings oil filter to rule out any sealing/gasket issues. IF that doesn't change anything you need to explore furtherbad relief valves (filter and/or pump), worn oil pump, pickup screen blockages ect Good luck! On 5/17/2013 8:32 PM, Rick Knoble wrote: I changed the sender out today. No change. Will do the o-rings tomorrow. I hope I haven't done any damage by running it with low oil pressure. Rick -- Chris J. ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
Hi All, A question for the group. Last night on the way to work, the oil pressure on my '92 300D dropped from 3 bar pegged to a little over 2 bar, while driving 60 mph. (Tach is on the todo list). At idle, warm, it is BELOW one bar. That is WAY too low, I know that. When cold it runs where it is supposed to, but as it warms up the pressure drops. That is normal, just low. The following is my list of possible causes. Comments PLEASE... 1. Failed o-ring(s) on oil filter stem. 2. Schumtz in the oil pickup from somewhere (vacuum pump, timing chain guides, etc.) 3. Failed oil pump. Ideas? Pictures of gauges (Low oil pressure, failed tach, failed odometer...) https://dl.dropboxusercontent.com/u/5902347/Photo%20May%2012%2C%2010%2027%2050%20AM.jpg https://dl.dropboxusercontent.com/u/5902347/Photo%20May%2012%2C%2010%2028%2015%20AM.jpg https://dl.dropboxusercontent.com/u/5902347/Photo%20May%2012%2C%2010%2028%2022%20AM.jpg Thanks, Rick Knoble ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
Have you checked the oil level? Is it too high? If so it's leaking diesel fuel from the ip into the engine oil thinning it out Sent from my iPhone On May 12, 2013, at 6:08 PM, Rick Knoble rickkno...@hotmail.com wrote: Hi All, A question for the group. Last night on the way to work, the oil pressure on my '92 300D dropped from 3 bar pegged to a little over 2 bar, while driving 60 mph. (Tach is on the todo list). At idle, warm, it is BELOW one bar. That is WAY too low, I know that. When cold it runs where it is supposed to, but as it warms up the pressure drops. That is normal, just low. The following is my list of possible causes. Comments PLEASE... 1. Failed o-ring(s) on oil filter stem. 2. Schumtz in the oil pickup from somewhere (vacuum pump, timing chain guides, etc.) 3. Failed oil pump. Ideas? Pictures of gauges (Low oil pressure, failed tach, failed odometer...) https://dl.dropboxusercontent.com/u/5902347/Photo%20May%2012%2C%2010%2027%2050%20AM.jpg https://dl.dropboxusercontent.com/u/5902347/Photo%20May%2012%2C%2010%2028%2015%20AM.jpg https://dl.dropboxusercontent.com/u/5902347/Photo%20May%2012%2C%2010%2028%2022%20AM.jpg Thanks, Rick Knoble ___ 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://mail.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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
First question would be: What kind/weight of oil are you using, and what are the ambient temps? Dan On May 12, 2013, at 7:08 PM, Rick Knoble wrote: Hi All, A question for the group. Last night on the way to work, the oil pressure on my '92 300D dropped from 3 bar pegged to a little over 2 bar, while driving 60 mph. (Tach is on the todo list). At idle, warm, it is BELOW one bar. That is WAY too low, I know that. When cold it runs where it is supposed to, but as it warms up the pressure drops. That is normal, just low. The following is my list of possible causes. Comments PLEASE... 1. Failed o-ring(s) on oil filter stem. 2. Schumtz in the oil pickup from somewhere (vacuum pump, timing chain guides, etc.) 3. Failed oil pump. Ideas? Pictures of gauges (Low oil pressure, failed tach, failed odometer...) https://dl.dropboxusercontent.com/u/5902347/Photo%20May%2012%2C%2010%2027%2050%20AM.jpg https://dl.dropboxusercontent.com/u/5902347/Photo%20May%2012%2C%2010%2028%2015%20AM.jpg https://dl.dropboxusercontent.com/u/5902347/Photo%20May%2012%2C%2010%2028%2022%20AM.jpg Thanks, Rick Knoble ___ 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://mail.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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
On May 12, 2013, at 6:48 PM, Dan Penoff d...@penoff.com wrote: First question would be: What kind/weight of oil are you using, and what are the ambient temps? Mobil 1 5w40 Turbo Diesel, ambient temp 49 degrees Fahrenheit. Oil is full and does not smell like fuel. Due for a change though. Rick Sent from my iPhone ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
On May 12, 2013, at 6:09 PM, Rick Knoble rickkno...@hotmail.com wrote: 3. Failed oil pump. 4. Failed oil sender? Rick Sent from my iPhone ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
That could be possible too Sent from my iPhone On May 12, 2013, at 7:12 PM, Rick Knoble rickkno...@hotmail.com wrote: On May 12, 2013, at 6:09 PM, Rick Knoble rickkno...@hotmail.com wrote: 3. Failed oil pump. 4. Failed oil sender? Rick Sent from my iPhone ___ 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://mail.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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
After dealing with a wonky coolant temp gauge myself, I wouldn't trust the gauge. Put a mechanical gauge on it to be sure. Dan On May 12, 2013, at 8:14 PM, Kaleb C. Striplin wrote: That could be possible too Sent from my iPhone On May 12, 2013, at 7:12 PM, Rick Knoble rickkno...@hotmail.com wrote: On May 12, 2013, at 6:09 PM, Rick Knoble rickkno...@hotmail.com wrote: 3. Failed oil pump. 4. Failed oil sender? Rick Sent from my iPhone ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
Oil pressure problem on my 81 300D years ago was cogged pickup screen (bits of vac pump from several years before). Wilton - Original Message - From: Rick Knoble rickkno...@hotmail.com To: Mercedes Discussion List mercedes@okiebenz.com Sent: Sunday, May 12, 2013 8:12 PM Subject: Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel On May 12, 2013, at 6:09 PM, Rick Knoble rickkno...@hotmail.com wrote: 3. Failed oil pump. 4. Failed oil sender? Rick Sent from my iPhone ___ 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://mail.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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
Bad ground? Tach is inop. What year? Does it have a self destructing wiring harness? These have not been prevalent on Diesels, but still possible as the cars age. I seemed to get the things that Herr Doktor said were impossible. That could be possible too Sent from my iPhone On May 12, 2013, at 7:12 PM, Rick Knoble rickkno...@hotmail.com wrote: On May 12, 2013, at 6:09 PM, Rick Knoble rickkno...@hotmail.com wrote: 3. Failed oil pump. 4. Failed oil sender? Rick Sent from my iPhone ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
Verify that the pressure is indeed low and you don't just have a bad pressure sender unit! Mine did something similar, then dropped to zero and sat there. Replaced the sender, works fine. It is also possible to dislodge an internal seal in the oil filter, which will drop the oil pressure quite a bit. 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
Try replacing the oil pressure sensor first. They are electronic and do go bad. I thought my '87 wagon had abnormally low pressure at hot idle, and so replaced the sensor and then it read 1.5 bar or higher. -- Max Dillon Charleston, SC '95 E300, '87 300TD, '73 Balboa 20 ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
Try replacing the oil pressure sensor first. They are electronic and do go bad. I thought my '87 wagon had abnormally low pressure at hot idle, and so replaced the sensor and then it read 1.5 bar or higher. -- Max Dillon Charleston, SC '95 E300, '87 300TD, '73 Balboa 20 __ Since its time for an oil change, I might try changing oil and filter first. I keep those on hand, while it would take a week to get a sensor from Q. What brand of filter do you use? If it is Mann, Knecht or similar, there should be no problem. Even a Wix in nowhere near as good as a german one. With 'merkun engines, Wix is the best generally. More likely to have a filter failure with a 'merkun brand filter. ___ 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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Low Oil Pressure W124 2.5 Turbo Diesel
I can have you a sensor by tues. Wed at the latest. if you let me know tomorrow. On Sun, May 12, 2013 at 8:47 PM, Dieselhead 126die...@gmail.com wrote: Try replacing the oil pressure sensor first. They are electronic and do go bad. I thought my '87 wagon had abnormally low pressure at hot idle, and so replaced the sensor and then it read 1.5 bar or higher. -- Max Dillon Charleston, SC '95 E300, '87 300TD, '73 Balboa 20 __ Since its time for an oil change, I might try changing oil and filter first. I keep those on hand, while it would take a week to get a sensor from Q. What brand of filter do you use? If it is Mann, Knecht or similar, there should be no problem. Even a Wix in nowhere near as good as a german one. With 'merkun engines, Wix is the best generally. More likely to have a filter failure with a 'merkun brand filter. __**_ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/**archive/http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.comhttp://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- Trent Fiorini BuyMBparts, Inc. 1-800-741-5252 buymbpa...@gmail.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://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
