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Thinking of buying 1983 F150 Can start after dumping gas in the carb, will not idle, backfires through carb. Once you idle up by hand the exhaust manifold glows red, there is no converter in the exhaust system

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You are getting unburned fuel into the exhaust, could be bad spark, could be engine problem, do a spark test at all the plugs, and do a compression test, exhaust valve will cause this problem,

Posted on Oct 15, 2010

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1983 f150 with 351 windsor. Recent problem of bogging down when climbing moderate hills. Also sounds of ticking noise, lifters or manifolds leak? Any help much appreciated.


A leaking exhaust manifold could make a ticking noise. So could a lifter or valve. The exhaust noise would be louder under load.
If the carb is running too lean, or you have a vac leak, the lean fuel mixture could make the exhaust leak worse, and cause the loss of power.

Dec 19, 2012 | 1983 Ford F150

1 Answer

84 f150 carburetor out of tune


When you get a rebuilt carb you have no idea what the
applications are for

I suggest you rebuild your own,
that way you have all the settings
& experience when your done

I think the float needs to be set correctly
& maybe the pump if there is anything for that
external

You have to have some knowledge about basic
adjustments of air idle screws

Start about one turn out from seated & then use a
vacuum gauge to get the highest reading & then go in
a 1/4 turn
Can use a tach also or both,then reset the timing

I would have all 3 on motor at once

When done you set the idle screw with air cleaner on

Nov 25, 2012 | 1984 Ford F 150

1 Answer

The van will start, but have to push pedal to the floor, once it starts it will idle great but dumps a lot of gas into the carb., once you push down on the pedal it dies.


carb problem sounds like choke is stuck or float is stuck remove cover and air cleaner and watch operation when starting see if choke blade is open or shut on carb and if shut watch to see if it opens when u let it idle. if not choke pull off solenoid is bad. if working tap on carb to free float.if that don't work carb may need to be rebuilt or get new one .

Mar 28, 2011 | 1989 Chevrolet G20

3 Answers

83 ford f-250 351. starts but will not idle


If its a (holley) motorcraft 2 bbl carb sounds like the power valve. They typically blow out whenever the engine backfires or they just wear out after time and flood the idle circuit.

Aug 04, 2009 | 1983 Ford F 250

1 Answer

1976 Ford F150 Bogs down when accelerater is pressed.


if it has a converter on it.....it may be stopped up, but before you replace it have the fuel pump checked, as it may not be getting enough gas at higher rpms. It will start and idle fine, but starve out when you press the pedal. Have you changed the fuel filter?That will cause the same problem.....

Jan 30, 2009 | 1983 Ford F150

1 Answer

Samurai backfire


It sounds more like a timing problem. If it backfires through the carb that means the intake valve is open when the spark plug fires. Same with the exaust but it the exhaust valve that is open.

Dec 14, 2008 | 1986 Suzuki Samurai

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