Question about Ford F-250

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My 1985 F250 starts then dies after a few seconds of running. I put on a brand new ignition control module, and that wasnt it. I also replaced the ignition coil, ignition coil cap, and Bought a bran

I had somebody tell me on here that it could be my ignition switch. So what I decided to do was to see if it is electrical problems or fuel problems. I bought a can of carburetor spray, got the truck running and then sprayed the carb spray into the carburetor and was able to keep it running with that carb spray. So I think it is definitely a fuel problem. I bought some fuel additives but that didn't seem to fix it cause I was thinking maybe it was bad fuel. So its got to be somewhere between my fuel tank and my carburetor, but I have no idea where to start looking because its got a new fuel pump in it and a new fuel filter. Could somebody help me please on this I don't know what to fix next on this thing?

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By your description it sounds like you have carburetor issues, Possible clogged metering jets , a float problem , throttle adjustment or even possibly a major vacuum leak.

Posted on Feb 10, 2014


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SOURCE: Chevy S-10 Start problems

If hall effect switch was bad you wouldn't get any spark.What year 2.5L is this?Is this a 2 injector Throttle Body? The pink wire on top of injectors comes thru a 20Amp fuse controlled by the Ignition switch you should have battery voltage with key on The dark green and dark blue wires come from the pcm which are called injector drivers the drivers supply a pulsating ground if you crank the engine with a test light between either pink/dk green or pink/dk blue test light should flash dimmlythat would mean injectors are being driven but there isn't any fuel at the injector or the injectors are bad no pulse means either a bad computer ( which these drivers are known for going bad)or the computer isn't being commanded to fire the injectors.

Posted on Aug 25, 2009

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SOURCE: 1995 nissan pickup truck fuel problem

Fuel injected or carb? Make sure fuel line itself is clear. Some pumps are designed to self regulate (carb systems) some continually pump and a psi regulator sends back the excess fuel back to the tank (fuel inj systems) If the line is obstructed then pump can't deliver fuel fulltime.

If you think pump is not on consistent, try running a dedicated wire through a switch directly to the pump. If it works then you are looking for an electrical fault going to pump. Good luck.

Posted on Mar 10, 2010

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Ok I have a 1985 F250 460, I start it up, it runs for about 2 seconds then dies, the fuel pump has been replaced, the ignition coil has been replaced. I bought a brand new Holley carburetor for it and...

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