Question about 2000 Ford F250 Super Duty Crew Cabs
Seems to be every time we go camping and hit washboards. put bg44 k in and new air filter. recently replace fuel filter. could it be coil packs or injector clips vibrating loose?
Posted by Anonymous on
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Posted on Jan 02, 2017
sounds like you have a dead ignition coil very common problem. to check the ignition coil and fuel injector harness without a scan tool you can use a noid light. it is a 12volt light bulb that connects to the harness side and flashes indicating that the computer is firing the injector and or coil. there is no specifications to check the ignition coils the best way is with a scan tool see witch cylinders have the most counts in the misfire history your local dealer may also be able to perform a cylinder balance test to find the dead hole. unfoutunatly you have to remove the doghouse to access the rear coils and fuel injectors.
Posted on Jul 14, 2009
I had a similar problem in a 1994 Taurus, and after spending nearly 300$ on ignition parts, it turns out the problem was a bad spark plug wire that cost me 8.88$ to replace.
Posted on Mar 01, 2010
Testimonial: "n.o. 1 spark plug wire it is. thank you"
SOURCE: I have a 2003 ford
Check for Intake Manifold leaks with either a water mist from a spray bottle or Choke cleaner. Do this while the engine is running and you will know about a leak with an RPM change. I read about some intakes were 2 piece and the intermediate gasket leaks.
Also you could clean the MAF on the air intake with Electric cleaner. If you have an old fashion Vacuum gauge you could plug in and see how steady Valves are closing by watching the Vacuum bounce from misfires.
Would like to know results on this case.
Posted on Nov 03, 2010
SOURCE: vehicle came in for check
A misfire at idle that smooths out at cruise is ALMOST ALWAYS caused by a vacuum leak. Take a hard look at your fuel trims at idle. If the Bank 2 Long Term Fuel Trim is more than + a couple points higher than the Bank 1 trim, your problem is most likely a vacuum leak. If the Fuel Trims even-out while holding the engine at 2000 RPM for about 20 seconds, then a vacuum leak is DEFINITELY your problem. I would suspect a leaking lower intake gasket leak because an upper plenum leak will normally affect all cylinders.
Posted on Jan 30, 2011
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