It is common for the rubber hose to fail. And leak can travel sideways and look like it's coming from somewhere else. You need to find the highests point for the gas, not just the point from which it's dripping. It seems to me if it hasn't been disturbed recently it's more likely to be rubber failure. None of these things are big jobs, but you need to find the source, or just start replacing everything. It's probably a good time to put on a new fuel filter if it hasn't been done in a while.

I replaced the fuel filter about 6mos ago. I will have to look at it again tomorrow when the sun is out...

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http://comp.uark.edu/~dmgill/signature.jpg

I wanted to replace my filter at the DIY session yesterday, but I didn't. The pipe from the filter to the pump is badly rusted so I'm going to change out all the hoses and pipes in that area. The pump is buzzing too so I probbly need a new one.

Moparmike, use flare tool wrenches for the job.

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Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.

You will need qty. 1-007 603 010 112 and qty. 4-007 603 012 111 copper crush seals to repair the leak. The most common cause of the leak is from the crush seals. Be sure and wrap rags around your wrists when doing this repair to keep gas out of your arm pits. Hope this helps, Robert.

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Mercedes Benz Master Tech - Retired

And double-check the fuel hose as well.

From my experience, crush seal leaks only occur during an improper install, or when something disturbs that area (greatly!). They don't usually just fail for no reason.

Really check the hose...the fuel just travels to the lowest point of exit (the fitting) and the amount of residue on the actual hose may be small enough to evaporate and not leave much of a trace.

The hose on my 300E leaked a bit, and the smell was horrendous! Surprisingly though, you couldn't find a trace of fuel anywhere...even with the engine running. So I had to clean everything to a spotless condition and drive for a couple of days before I could eventually find the telltale evidence of a leak.

I replaced the offending hose, and the problem went away.

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car

Try just tightening the banjo bolt down first. Maybe it's just loose.

I do not think there are any rubber hoses on this end, so I'm not sure if prior comments in this regard are applicable.

Perhaps take this as an opportunity to replace filter.

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1986 300E 5-Speed 240k mi.

I have worked on these cars for twenty years and seen alot more crush seals cause leaks than fuel hoses. Granted I have seen fuel hoses leak but this model car it is usually the crush seal between the check valve and the fuel pump. From the factory that crush seal is a thick crush seal. The replacement crush seal is not as thick and seals much better. If you try to just tighten the fittings you may overtighten them which will damage the banjo and not allow for a proper seal. The crush seals needed cost less than five dollars so its a cheap fix to try first.

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Mercedes Benz Master Tech - Retired