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1992 Ford F250 - fuel injected motor - running too rich

My 1992 Ford F250 seems to be running too rich - is there a way to adjust the fuel to run leaner?

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  • cody persinger Aug 28, 2013

    no spark after changeing the coil and testing the wires goin to the coil and they tested good?



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You cant adjust fuel on the ford governor its can adjust fuel on cummins governor.have your governor injection timing check .make sure air filter not stopped up or will cause it to run rich.

Posted on May 19, 2009


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1992 f150 4.9 liter runs rough and smokes black

Black smoke is due to a rich fuel mixture, Check first to make sure you have a clean air filter. If you have a MAF Sensor or an O2 sensor going or gone it will tell the computer the wrong information and the computer will adjust accordingly. You can always use a code reader to see what codes you have, A parts store will have one to read a code for you. I have seen more black smoke from a restricted air filter than anything.

May 09, 2014 | 1990 Ford F250

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Rebuilt engine (302) in truck,running very rich,then truck quit.we try changing ignition coil,we have spark just will not fire,even tried to turn of fuel pumps to clear fuel,still not firing

to run an engine needs 3 basic things fuel air and spark. you have spark so next step is to see if you are getting fuel to your cylinders i am guessing it is injected so you should check fuel pressure in your fuel rails. if you are gettign fuel then last thing would be air but is highly unlikely i would say no fuel

Jan 06, 2011 | 1990 Ford F250

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Fuel pump runs constantly.

Bad fuel pump. Replace and/or check auto cut off for pump. Please note fuel pumps (electric) for injection systems are almost always in the fuel tank.

Nov 02, 2010 | 1992 Ford F250

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I have a 95 ford f-350 with a 460 and i want to know why its running so rich new o2 scencer new fuel pump. it is fuel injected

i don't know man my 1992 ford f250 460 is doing the same thing. it is running way to rich and bearly idles .

Oct 30, 2010 | 1998 Ford Explorer

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Sounds like the injector pump is putting out too much fuel, i.e a overly rich condition. Could also be leaking causing it to be flooding while it is sitting.

Aug 18, 2010 | 1992 Ford F250

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The truck will only run for 30 seconds at a time and sometimes wont even start and sometimes when it does run it will run really rough and have no power. it is deffinately getting spark though

can b a few problems check fuel pressure /fuel filter and or fuel pump/ check egr valve /test either clean repair,replace/check carb-throttle body clean repair/check cat converter possible clogging

Apr 26, 2010 | 1992 Ford F250

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Fuel guage fluctuates truck seems to lack fuel and sputters

you may have a bad fuel pump or a bad injection pump,here are picture of the two, as far as the gauge you may have a bad fuel sending unit, this is in the tank and work like a toilet float and sends a signal to the gauge, the injection pump and fuel pump are located on top of motor you would need to have the preasure checked on both before just replace them hope this is helpful.31a2121.jpg22edc2f.jpg

Feb 18, 2010 | 1993 Ford F250

1 Answer

My 351 is running rich

use the air and gas flow adjustments on the side of the carburator to adjust the rich/lean flow of gas. there is a srew on each side of the carb to adjust one is for air the other for fuel. the one on the driversside is for the fuel and the one on the passenger side is for air. you have to turn them slowly til you get the desired results

Feb 17, 2009 | 1984 Ford F 250

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