1998 Ford F 150 Ve Put New Fuel Pump Iac On Try Start Truck Try S Pops Loud Out

1998 FORD F-150
150,000 MILES
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ZCOLEHOUSE
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I've put a new fuel pump a new fuel pump and Iac on it but when I try to start the truck it try's to start but then pops loud out of the throttle body and shuts off what could be wrong with it?
Apr 5, 2013 at 2:02 AM
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DRCRANKNWRENCH1
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I am giving you a walk through diagnostic for your issue. You might have a bad fuel pressure regulator or the crankshaft timing pickup may be bad.
Look through this diagnostic and get back to me with any questions.

http://www.2carpros.com/articles/engine-backfires-while-running
Apr 5, 2013 at 2:13 AM
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ZCOLEHOUSE
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Is it possible I have bad spark plug wires? Because I put a different spark plug in the one wire and tried to start it but the spark plug wasn't even sparking?
Apr 11, 2013 at 1:32 AM
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DRCRANKNWRENCH1
  • CAR REPAIR CONTRIBUTOR
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Yes. If other plugs have spark the plug wire could be bad. If you have a multi-meter you can test the wire for continuity. If you get new plug wires it is worth getting good ones as the good ones have less resistance and get more energy to the plug for a hotter spark.
Apr 14, 2013 at 8:17 PM
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