78 J20 - Just installed new tank, sending unit, hoses, and mechanical pump. Only old part is the metal lines along the frame rail. Starts fine with starting fluid, so it's definitely a fuel issue. There's about 8 gallons in the tank, so I think that's enough to reach the pickup. Any ideas? Don't have a compressor to blow out the metal lines, so maybe there's crap clogging it. There's no fuel coming out of the pump when I crank it over(for a while). Do I need to prime the pump somehow? I must be missing something simple
Not getting fuel
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weak pump... may be if you have the original carburetor, the motorcraft 2150 you can dump a little fuel down the carb air horn, if the engine starts, it may give it enough ooomph, rpm, to give the pump more cycles to self prime...
sometimes the line can be slightly rusted at the pick up and the pump is pumping airMichel
74 wag, 349Kmiles on original ticker/trany, except for the rust. Will it make it to the next get together without a rebuilt? Status: needs a new body.
85 Gwag, 229 Kmiles. $250 FSJ test lab since 02, that refuses to give up but still leaks.
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found the leak
After posting this it was bugging me that I never checked the metal lines. Just tried sucking on the line, didn't get any fuel. Tried blowing in the line, didn't hear bubbling in the tank. Found a little split in the rear metal line against the frame. Probably going to put a small section of rubber hose over the split as a sleeve for now. Just want it running right now, so I can look for any other engine issues. I'll replace the metal lines properly when I take the bed off.Last edited by Sgtjoyce; 05-25-2020, 08:55 PM.Johnny
78 J20 360, TH400 new project
77 CJ5 Straight 6, T-18, 10/14 Bolt, 4.88's, 38's, spring over, stretched rear, fiberglass body, cage
09 JKU Mall crawler
15 JKU Wife's
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glad that you found the leak... the 74 has still its hard plastic line...
Rubber will be good for quite some time, it has to be checked every 5 years because it is not as good as it used to be.Michel
74 wag, 349Kmiles on original ticker/trany, except for the rust. Will it make it to the next get together without a rebuilt? Status: needs a new body.
85 Gwag, 229 Kmiles. $250 FSJ test lab since 02, that refuses to give up but still leaks.
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