priming fuel pump?
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Elder User
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priming fuel pump?
firing up the 74 F100, first time since May. New gas tank, sender unit, fuel lines, and filter. I'm not seeing any fuel at the fuel pump. I disconnected the rubber hose going from tank to frame rail and there was back there. should I pour some fuel into the line going from tank to pump, to prime the pump?
Moderator & parts slinger
Joined: Feb 2007
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From: S/W Missouri, Polk county
Easier to put it in at the fuel pump connection end, (where the frame line goes from solid to rubber) or use a hand pump to draw it from the tank to prime the line.
Prime the mechanical fuel pump first with a short line into a gas can, and hand prime the carb with a little bit, one it runs from the gas can and you have the line primed it should draw if from the tank.
Prime the mechanical fuel pump first with a short line into a gas can, and hand prime the carb with a little bit, one it runs from the gas can and you have the line primed it should draw if from the tank.
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Elder User
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i'm trying to shortly. i've really never had completely empty lines on any car i've owned and knowing how a mechanical F/P works, those suckers just can't pull fluid well. they can push it, but they don't pull well.
More Turbo
Joined: Oct 2011
Posts: 636
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From: down a red dirt road
hey the reverse shop vac would be more than enough push for that! sorry to hear about your compressor. the big compressor we have in the shop at work has been around since the place was built and our boss changes the oil in it with some MOA additive(like an oil treatment) and it keeps on keepin' on!
More Turbo
Joined: Oct 2011
Posts: 636
Likes: 5
From: down a red dirt road
I havent had much issues with priming the pump itself as long as the line was primed like i did i was always fine. it also depends what kind of pump. the 460 i had and most of the older ones had the fuel filter can on the bottom of the pump, i always tried to keep that can full of fuel also. ive never even had to fill the carb either, just dumped a few capfulls down the intake to get the motor to fire for a few seconds and run the pump
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Elder User
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Just did it. Or I should say over did it. Spewed gas right up to the pump and unfortunately on me (out the filler neck). Didn't see it coming....Now for da bowl.
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Elder User
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Nice. no, it was my fault. seriously, one of my dogs came over to the truck while i was turning on my vacuum/blower. I sorta lost track of how much air i put in it.
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