PeachParts Mercedes-Benz Forum - View Single Post

G-Benz · #4 03-03-2008, 11:59 AM

Had two gas odor issues to contend with over the years...one with the W124 and another with an R129 I once owned.

The R129 issue was simple. A loose hose clamp near the rear-mounted pump contributed to a visible "drip drip drip".

I might add that sometimes a visual inspection of a fuel hose won't render any clues as to the source of a leak...this was the case on the W124.

Even gas residue will smell up a garage! So you don't have to see a puddle to determine there is a leak.

In my case, I ended up driving the car out onto a highway for several minutes, then immediately pulling in to the garage. Finally, I could see a faint wet spot on the fuel hose aft of the pump...a pinhole leak that was very difficult to see even with a flashlight. Gas smell vanished after I replaced the hose.

By the way, it took me nearly a week to find that leak. So perhaps your crew didn't have enought time to find the source...