Could it be the fuel?
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Senior User
Joined: Dec 2010
Posts: 150
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From: Alameda, CA
Could it be the fuel?
Once again I'm back on the board with more issues but isn't that what this is all about.
Started the 302 up today and the timing issue appears to be fixed reall good starts up right away. Now to the problem. I hooked up my fuel lines to the mechanical pump that came with the motor and it doesn't work. The electric pump does not seem to push that many gph so I'm looking for a good replacement nothing too expensive for now.
Started the 302 up today and the timing issue appears to be fixed reall good starts up right away. Now to the problem. I hooked up my fuel lines to the mechanical pump that came with the motor and it doesn't work. The electric pump does not seem to push that many gph so I'm looking for a good replacement nothing too expensive for now.
Cargo Master
Joined: Jun 2001
Posts: 2,571
Likes: 22
From: Oxford, Indiana
You mentioned the truck has been sitting for some time. The mechanical pump on the engine is probably hosed. Modern fuel sitting around for an extended time in an old mechanical fuel pump will ruin it every time. The ethanol they're putting in today's gas will eat up the rubber diaphram. That's probably what's wrong with yours. Your best bet would be to not mess with the electric pump and just replace the mechanical pump. A new one is inexpensive, easy to change and hook up, and would be more than sufficient for your needs.
Thread Starter
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Senior User
Joined: Dec 2010
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From: Alameda, CA
I bought a stock replacement, maybe I'm not putting it in right?? I did what the directions say unjust can't seem to get it to work.
Any ideas?
What's wrong with buying a high performance electric pump?
Any ideas?
What's wrong with buying a high performance electric pump?
Cargo Master
Joined: Jun 2001
Posts: 2,571
Likes: 22
From: Oxford, Indiana
I don't think it's possible to put them in wrong. If the lines and everything are dry, it may just be a case of it needing primed. My old junk Chevy dump truck loses its prime and the carb dries out if it sits for more than a week or two without running. I've usually got to squirt gas in the carb with an old oil can to keep it running for a minute or two before it will draw fuel and stay running on its own. You may need to do the same.
Nothing, really. It's just kinda like driving an 18-wheeler to the grocery store for a case of beer and some pork rinds. It would get the job done, but it would be overkill for your rig. A stock mechanical fuel pump would feed a basically stock 302 all day long without any wiring, safety switches, or headaches. Hi-po electric pumps aren't really useful or necessary until you're trying to knock down a quarter mile in about 13 seconds in a race car.
What's wrong with buying a high performance electric pump?
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Senior User
Joined: Dec 2010
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From: Alameda, CA
Ok point taken. I have a few upgrades that make it not stock. 4 bbl carb and manifold, I plan to do the headers and install a few other items. So with a few good upgrades would a good electrical pump be ok?
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Senior User
Joined: Dec 2010
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From: Alameda, CA
Ok point taken. I have a few upgrades that make it not stock. 4 bbl carb and manifold, I plan to do the headers and install a few other items. So with a few good upgrades would a good electrical pump be ok?
Logistics Pro
Joined: Nov 2006
Posts: 3,671
Likes: 367
From: Fallon,NV & Bainbridge OH
Go for the mechanical as stated, Ford made plenty of High Performance engines with more done to them than your 4bbl and manifold and they ran great on mechanical pumps. The mechanical pump will not suck through the electric pump very well unless it is running but it sounds like your electric pump is a POS (piece of sh t) and needs to be taken out. Make sure your line are clear and you should be fine with the mechanical pump.
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Cargo Master
Joined: Jun 2001
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From: Oxford, Indiana
I have a few upgrades that make it not stock. 4 bbl carb and manifold, I plan to do the headers and install a few other items.
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Here is a trick I have used to prime a mechanical pump after things have dried out - Disconnect the fuel line at the carburetor and direct it into a can, with an air compressor, set the regulator at 10 psi or less and take a blow gun with a rag wrapped around it and hold it in place in the fuel filler hole. Apply air gently (you do not want to balloon your gas tank) until fuel flows out the line you disconnected.
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Senior User
Joined: Dec 2010
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From: Alameda, CA
Not the entire fuel line. Only from the POS fuel pump to the carb including the fuel filter. I know I know, I have to replace the line from the tank to the new pump to complete it.
What someone suggested was tank the top off the gas tank, drain it and let it air out for week.
Sound good?
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Senior User
Joined: Dec 2010
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From: Alameda, CA
alameda, ca by san franciso