Join Date: Aug 2008
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Check valve on return line fuel system
I was putting a return line cap and o-ring kit on my truck. I have been having problems with air in the fuel system. Please correct me if I am wrong, but the check valve in in the brass fitting where the return line goes into the fuel filter head. I pulled this fitting and I can see completely through it and blow air both directions. This is definitely a problem right?
Where can a get one of these? I have called around and of course can't find such a thing at the usual parts sources.
I just found an exploded diagram of the filter and filter head and it shows the part in question as "fuel return orifice and check valve", so this should be a check valve and is definitely a problem with getting air in the system. So the big question is where to get a replacement? I know of several of these engines in a nearby junkyard.