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Thread: misfiring
          
   
   

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  1. #1
    chevy 37's Avatar
    chevy 37 is offline CHR Member Visit my Photo Gallery
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    Jan 2004
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    Auburn
    Car Year, Make, Model: 1937 chevy truck& 33 fordtruck
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    3,017

    misfiring

     



    Took my headers off this afternoon to check all my plugs. Engine was misfiring. Only found one bad plug#8 coated with oil. Put new plug in, others looked great and still misfired. Put spark tester on plug wires and they all are firing ok. Whats next? Pull valve covers to see if I have a broken valve spring of lifter? Pulled distributor(MSD) and all terminals looked good. Can get truck up to 90 but you can feel it misfiring. Think I might have dropped a valve?
    Keep smiling, it only hurts when you think it does!

  2. #2
    WRENCHD is offline CHR Member Visit my Photo Gallery
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    Dec 2005
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    Car Year, Make, Model: 64 DODGE 440
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    you could put a vacume gauge on the motor and see if the gauge flucuates alot. if it does then you probable have a valve problem,and of course you could do a comp test, but it sounds like a valve
    WRENCHD

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