Deisel Fuel Leak
 

I have a 1995 E300D which has a deisel leak. It started with the injection pump and seems to be moving around. The next leak fuel filter shutoff valve, the hose "o" rings, etc. It seems to happen when it is hot and in Houston that's common. I've replaced pretty much every gasket and "o" ring. When I fuel up the fuel cap lets off quite a bit of pressure. My question is: is there a fuel pressure relief/return somewhere that I am missing?

return lines
 

are your diesel return lines wet.. especially the last one thats capped off... if they havent been replaced its a cheap fix...

im going thru a nightmare with my 92 2.5,,,

replaced o-rings and press valve seals .. now cant get it to run right.. followed all the specs and torquees.

good luck