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Originally Posted by G-Benz
I had to replace a fuel hose by the pumps on my 300E last year. The smell was horrible when the car sat in the garage after a drive, and the fuel consumption was dramatic! And it doesn't take much of a leak to smell like you've got a hole in your tank!!
Still, there was no pool of gas on the floor and no residue on the offending hose. I had to clean the hose and fuel pump cover tray spotlessly and then do a hard drive for an hour before I could find a trace of residue on the tray and a dark spot on the hose.
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The same thing happened to my '87 260E. After I changed the fuel filter, apparently I put a twist in the braid covered flex hose from the filter to the "hard" lines. It developed several pinhole leaks that squirted gas around. Not enought to make a puddle, but it smelled like gallons worth. A fairly easy fix. The 18mm fittings seemed to fit my 11/16" open end wrenches better for some reason. Cheap hose, complete fix. Looking at the different online catalogs, there are different lengths for different cars and different chassis numbers in a series.
best of luck,