Question about 1981 Ford F 100

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I have a1973 ford f100 after it cools it will not start. a splash of gas in the carb it starts right up. The carb has been rebuilt twice any suggestions.

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Sounds like the float bowl is set incorrectly.

Posted on Sep 06, 2010

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I have a1973 chevy impala im leaking gas out of my 2barrel carb it leaking onto manifold. Any simple sloution


Replace the carb with a new one is the simplest solution. Having the carb rebuilt may save some money but is not as simple.

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Had my carb ( motocraft /holley0 rebuilt by a pro have it back on my 1980 ford 460 ( motorhome) i thought it was all hooked up right but some how i dont seem to be able to get butterfly to close using...


Hi, it's easy to get the choke linkage bound up at the fast idle cam. If that's not it, i would check the choke adjustment by pulling off the cover to see if the bi-metal coil is pushing against the butterfly link. What model carb do you have?

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F100 pickup stalls out when coming to a stop. It restarts and drives fine. I've rebuilt the carb., changed the fuel filters and line, and replaced the gas tank and sending unit. What am I missing or do i...


It might be the float but if you don't have any trouble getting the truck up to speed then it's likely fine. The trouble is more likely to be in the idle circuit. The curb idle should be 500 to 750 RPM depending on if it's standard or automatic ( higher for auto). If that's okay then you may have to play with the idle screws. Turn them both the same amount, 1/4 turn at a time. Turn them once and then rev the engine 2 or 3 times and let it idle down suddenly. You will have to re-adjust the curb idle to keep it at the right spot as well.
If the truck is an automatic, once you have it set up so it runs right then put it in gear and try again although that will probably only need the curb idle adjusted if it stalls. hope this helps.

May 09, 2010 | Ford F-100 Cars & Trucks

2 Answers

I have a 1972F100 after it cools down it will not


May be time to replace the Mechanical fuel pump.

Oct 01, 2009 | 1981 Ford F 100

1 Answer

1980 F100 with a straight 6 cyl. Won't idle.


The vacuum comes from the intake manifold and ported vacuum comes from the carb above the throttle plate. You might have a leak at the carb gasket or intake manifold gasket. Spray some car cleaner or WD40 around the gaskets and vacuum lines while the engine is running and when you hear the idle speed up, you've found the leak. You will need to install the rebuilt carb first, and you should tighten any loose intake manifold bolts. Don't overtighten them. Also check the EGR valve because it could cause the engine to stall at idle. A good tune up might be needed too. I've seen some of those engines run real rough when the ignition timing was off.

Sep 06, 2009 | 1981 Ford F 100

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