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  #1  
Old 12-27-2020, 02:24 PM
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2005 E320 CDI, fuel leak appears to be coming from the

bottom of the high pressure fuel pump located at the front of the engine.

At this point I cannot tell if the actual fuel pump is leaking or if there's a fuel line in close proximity to it. I have all of the covers off but I cannot tell for sure if the fuel pump is actually leaking.

Has anyone had an experience with this type of leak?

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1987 300E Wife Killed Engine
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  #2  
Old 12-27-2020, 04:37 PM
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like any leak, clean above it/start from the top to isolate the leak.Maybe an early case of "black death" caught early.
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  #3  
Old 12-27-2020, 04:57 PM
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Location: Barrington, RI
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Yes. In my case the pump itself was leaking...your symptoms sound the same as mine. I was able to source a reman pump for just over $500 a year ago.
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91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

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Last edited by shertex; 12-27-2020 at 05:19 PM.
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  #4  
Old 12-27-2020, 05:51 PM
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Join Date: Sep 2001
Location: Former New Jersey resident, transplanted to Atlanta
Posts: 465
It's funny that you would say that because I'm experiencing early black death on the injector of the first cylinder.
I would wipe the fuel pump clean then run the engine, funny thing is the bottom of the fuel pump got hardly wet. This would be my first experience with black death, could the fuel actually be coming from the injector that's leaking carbon? Makes sense!
__________________
Currently Driving
2006 E320 CDI
1999 E300 Turbo Diesl
2002 ML500
1995 E320 Station Wagon


MBs I've owned
1997 E320 Assassinated by Pine Tree
1987 300E Wife Killed Engine
1981 300D Stretch Limo Total Loss
1970 250 Coupe 212,000 mi.
1974 450sel 184,000 mi.
1974 240D 377,000 mi.
1977 300D 204, 000 mi.
1979 280se God Only Knows!
1983 240D 130,000 mi.
1972 220D 280,000 mi.
1983 300SD 244,000 mi.
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  #5  
Old 12-28-2020, 08:56 AM
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Join Date: Sep 2007
Location: Calgary Alberta Canada
Posts: 1,926
Return line leak?

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