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#1
06-28-2008, 07:11 PM
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Why no oil preasure?
While on my way to look at a 300SDL my 300D quit. It's like it knew I might replace it. There was a slight noise that cought my attention then 30 seconds later the engine quit. I pulled over and it restarted but with no oil preasure so I shut it off. I think the noise came from around the turbo area. Can the oil preasure drop if the turbo goes bad?
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#2
06-28-2008, 08:33 PM
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yes, the turbo oil line can dump all your oil out on the ground... no oil in the pan, no oil pressure...
how is the oil level?
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#3
06-28-2008, 08:47 PM
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The oil level was good. Thanks
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#4
06-28-2008, 08:59 PM
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It might have thrown the chain that powers the oil pump or the oil pump itself might have let go in some fashion. To inspect the chain etc the lower front portion of the oil pan has to be removed. Check the archives for pictures and information. Needless to say do not start this engine up before finding what is wrong.
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#6
06-29-2008, 01:08 AM
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What year 300D? The W123 models had an oil pressure line, not a sender. The same test can be done, of course. If you try this, have someone hold the STOP lever down or use a remote start switch so the engine cranks but does not fire. If you do not see oil squirting out then the pump is not working.
Jeremy
__________________
 "Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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#8
06-29-2008, 02:11 AM
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or hook up another pressure gauge?...
__________________
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? As long as they would add one additional commandment for you to keep thy religion to thyself. George Carlin (Wonder where he is now..) 1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won. pearl black 1983 240d 4speed (Converted!@$$%) atleast the tranny was rebuilt.
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#9
06-29-2008, 09:21 AM
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Excelent Advice! Thank You. I will tow the car home today and look.
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#10
06-29-2008, 01:35 PM
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Almost forgot. It is an 82 300D
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#12
07-01-2008, 06:20 PM
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I did the filter and it did not improve. That would have been too easy.
My engine manual does not have specific directions for inspecting or replacing the chain. It looks like I have to lift the engine but not remove it. Take off the oil pan and the front cover and replace the chain. I did search the forums but did not find anything specific. Do these engines shut down when oil preasure drops? My newer diesels have that feature.
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#13
07-01-2008, 06:47 PM
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Quote:
I think all engines shut down if the oil pressure drops to 0. 
__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine
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#15
07-01-2008, 07:28 PM
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FWIW Non-turbo 617s have a gear driven oil pump I believe, but the poster's '82 should have a turbo engine, and thus a chain driven pump.
__________________
1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine
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1981 300SD 512k OM603 
Linear Mode
