Date registered: Aug 2008
Vehicle: 2008 E320 Bluetec, 1988 560SL totalled unto death). 1997 Dodge Ram 1500, 1983 300CD
Location: Greater Metropolitan Beaverdam, Virginia
Mentioned: 3 Post(s)
Quoted: 176 Post(s)
Assuming the washers
(actually gaskets) were the right size and of the correct copper material, the leak can be from a cracked banjo fitting. The fitting can be cracked or distorted by overtightening, possibly in frustration at trying to stop the leak.
Pull it apart once more and carefully inspect the banjo fitting and the mating fuel pump surface. Reassemble with NEW gaskets and tighten firmly. If new copper gaskets are not available, the old ones can be annealed by heating to red hot on your kitched stove, then cooling slowly.
You my also want to inspect the fuel hose where it is swaged or clamped to the banjo fitting. If anything looks hinky, replace hoses and fittings. May be due anyway at that car's age.
BTW, change your charcoal canister and yes, there are check valves at the output end of your fuel pump but they are unlikely to cause this problem.
Last edited by rocky raccoon; 12-04-2010 at 12:19 PM.