I have a 1997 W210 E300D. I noticed smoke coming from under the hood the other day so I removed the crossover tube, took off the cover and looked at the injectors. There was a pool of diesel around each injector. I couldn't tell if it was from a leaking fuel line or injector. Has anyone else seen this before. How do I remove the injectors to take a look?
Thanks!

Hi, my car had the same trouble. It was the injector return lines. If yours look moist, they're probably the culprit. I bought a 4' section of viton line from www.fryerpower.com to replace them.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

First off welcome aboard.

Second always do a search on what you are interested in finding out more about.

Third search on leaking fuel return lines and/or replacing fuel return lines in diesel discussion. I always use oem material when I replace them.

good luck

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Jim

My mechanic replace the return lines with a rubber polyplastic tube. That tubing is tougher than nails, wont crumple or break. It fixed the problem.

Mine has a habit of poking a hole in the plug in the #6 injector. Might want to check that too. I replaced all my returns with viton also. No need to remove the injectors.

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Muleears
'07 E320 Bluetec 133K my DD
'04 Jaguar XJ8 VDP, 34K
'10 Hyundai Accent 60K Grocery Getter
'02 VW Golf soon to be on the road again
'97 E300 Diesel Son's DD
'61 VERY tolerant wife

Hampton Roads, VA USA

Gone but not forgotten:
'67 250S 95K
'86 300SDL
'87 300D Turbo, 364K! R.I.P.
'98 E300 Turbodiesel, 213K
'02 S420, 164K
'01 Prius 138K

This type of leak can have up to 3 sources:

- injector return hoses
- injector line nuts
- the middle of the injector where the two halves screw into each other

Before removing the injectors (if you decide to do so) suck all the injector wells dry so you don't have all this dirty fuel leak into your combustion chambers. You'll need a special socket, available at a dealer or online, to remove the injectors.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL

I had a bit of a variant. The plug on the last cylinder return line was dripping only under high throttle. The plug line was touching the injector lines and fuel was running down the supply lines and leaving the injectors wet. It took a little while to track that one down.

Yeah, it's hard to keep the injector wells totally dry. I have some microscopic leaks around like half of my injectors that I'm trying to nail down, but they're so minor that I might just have to live with them. I've especially had trouble with some of the injector line nuts.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL