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Old 04-25-2009, 06:04 PM
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Join Date: Nov 2002
Posts: 681
from my previous post on this thread---then look into the belly again. if it gets wet from the intake runners, then the injectors are leaking. if it runs down the side from the fuel dist, then the oring for the plunger is leaking. it might even be both, quite typical.

you said you have fuel in the airflow meter bowl. this means either the injectors and /or the fuel distributor is leaking fuel. there never should be any visible fuel ANYWHERE outside of the injection system. the intake is only for air. these are not carbs on these cars. ANY excess fuel is going to affect the starting and running until that fuel is burned off. and yes, they will leak while running and every shut off until you replace the injectors and/or fuel dist.

the 3 pin connector is a fuel pump run circuit. allows for testing. pity they didn't always do that. good luck, chuck.
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Old 04-27-2009, 05:29 PM
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Join Date: Jul 2008
Posts: 1,236

Thanks much for the info.... I'm gonna have to check that out. Just today, I pulled a fuel distributor, a computer, and some other parts from a 260E. I'm not sure if they are the same as mine or not, but it will at least let me get familiar with how to get to that o-ring without taking mine apart. Luckily, I know somebody at the yard and I get my parts for next to nothing, so I'm not too worried.

This weekend I put a brand new fuel pump on, and that seems to have helped quite a bit. The problem when starting cold is still there, but my general loss of power has completely gone. The motor runs very strong when warmed up a bit now. It definitely needed the new fuel pump.

I am beginning to realize that I have more than one problem at once. As I take care of certain parts, some symptoms are going away while others remain.

I still don't see how a little extra fuel in there would make a cold start such a pain, usually motors like a little extra fuel on a cold start. I'm not doubting you though, and the leak needs to be fixed anyway....... Hopefully you are right!

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1988 560SEL "Gunther"- 190K passes anything except a gas station
1997 S420 - 265k just bought it with a rebuilt trans. Lovely condition

Last edited by tinypanzer; 04-27-2009 at 06:41 PM.
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