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Old 04-28-2004, 15:06   #1 (permalink)
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Fuel delivery Or Ignition

I have a 76 2wd F-100 with a 302. It used to start easy and now it won't start at all. It refuses to unless you pour gas down the carb. Even then it just runs and dies. If you press the gas it seems to kill it. It seems like there is no gas getting in. I did use a can of Carb cleaner on it the night before it died. Now it won't start.
Another Forum said it might be the ignition but it starts and dies. Any thoughts? Any help would be appreciated.
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Old 04-29-2004, 03:27   #2 (permalink)
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Re: Fuel delivery Or Ignition

If your ignition was dead then it would not start at all unless you had an intermittent fault . sounds like fuel issues ,first of all is any fuel coming out if the discharge nozzles when you pump the accelerator? if not remove your lfuel line from the carb and position end of line into a container. crank over engine quickly for a couple of secs and see if fuel pump is actually pumping.if not fuel pump is shagged.
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Old 04-29-2004, 19:42   #3 (permalink)
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Re: Fuel delivery Or Ignition

Could be either, so you need to eliminate one thing at a time. Have you checked your points gap lately?
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Old 04-29-2004, 19:50   #4 (permalink)
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Re: Fuel delivery Or Ignition

I'm pretty sure it's the carb, it's dry inside the carb when you pump the gas but it still pumps plenty of fuel. I havent checked the points, we just got the truck as a fixer-upper and the last time it was registered was 92. The engine ran perfect and responded pretty snappy when it was warm. It only has 60,000 original miles on it, not bad for a 76! I think a carb rebuild will fix it right up.
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Old 04-29-2004, 20:01   #5 (permalink)
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Re: Fuel delivery Or Ignition

Sounds like a sus carb with a non-working accelerator pump. Got to love those. I had quadrajet on one of my HZ Kingswoods that was like that. Fix the accel pump first and go from there.

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Old 04-29-2004, 21:04   #6 (permalink)
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Re: Fuel delivery Or Ignition

Quote:
Originally Posted by pizalm
I'm pretty sure it's the carb, it's dry inside the carb when you pump the gas but it still pumps plenty of fuel. I havent checked the points, we just got the truck as a fixer-upper and the last time it was registered was 92. The engine ran perfect and responded pretty snappy when it was warm. It only has 60,000 original miles on it, not bad for a 76! I think a carb rebuild will fix it right up.
Have you checked the fuel pump? A sporatically operating fuel pump can give the impression of a bad carb and run "sometimes" and sputter a lot.

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Old 04-30-2004, 14:01   #7 (permalink)
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Re: Fuel delivery Or Ignition

we pulled off the fuel line and cranked it over an it pumped plenty of fuel but when the engine ran it didn't sputter. My dad thinks the diaphragm might have a hole in it, I think i'll have a look at it tomorrow.
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