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Aerostar 4.0, changed coil, still has a persistant miss, ideas?

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  • FestYboy
    replied
    do you have power to that injector?

    Leave a comment:


  • Movin
    replied
    They come out..without pulling engine
    make a hole big enough to pull the plenum
    through at the front of the engine.
    Last edited by Movin; 03-01-2012, 10:15 AM.

    Leave a comment:


  • chrisofna
    replied
    Originally posted by M3NTAL View Post
    Sounds like its clogged happen on my Harley truck, Try to clean it or get one at the yard
    Well I'm in trouble if so, cause I can't remove the engine to take it out.

    Leave a comment:


  • chrisofna
    replied
    Checked. It's good.

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  • 200KGPGTP
    replied
    Ignition control module?

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  • M3NTAL
    replied
    Sounds like its clogged happen on my Harley truck, Try to clean it or get one at the yard

    Leave a comment:


  • chrisofna
    replied
    Well, it's definitely cylinder number 5. We can manually click the fuel injector, but fuel isn't going into the cylinder I think. Maybe the computer isn't firing it. We got spark and compression. Any ideas?

    Leave a comment:


  • Movin
    replied
    Those are bad for vacuum leaks..Safety thing..you replaced any bad ignition parts
    right? Wires, plugs and cap..No possible sparks. Have a fire extinguisher handy
    in case you might have missed something. Use a can of carb cleaner spray or a
    unlighted propane torch..direct fuel near possible vacuum leaks with engine idling.
    When fuel is near a vacuum leak the leak will pull the fuel into the engine and smooth
    out the engines rough idle. Repair leak and retest. Absolutely do not do this if you
    are not confident about sparks. There are other methods such as vacuum hoses
    in your ear and directed toward the possible leak but do not use these as ear damage
    could happen. Please look carefully first as this id the safest method.

    Other possible causes you have not checked yet include compression, damaged crank
    sensor, valve seal making carbon in injector pocket, and faulty injector or circuit.

    I absolutely did not suggest soaking 100% of your brothers clothing in a full can
    of carb cleaner and burning them in front of the house while he is in the shower.
    Just load that van and get gone!

    Leave a comment:


  • Aerostar 4.0, changed coil, still has a persistant miss, ideas?

    Changed my coil because I had a miss and 2 of the plugs had gas on them so I figured hey, the coil must be bad. So I changed it but it's still there. I unplugged the MAF and it didn't change idle or how it ran at all. Any ideas?
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