Question about 2001 Ford Expedition

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My 8 cly code came up. I changed the plu and now it says cly 7 is bad

Posted by Anonymous on

  • Duane Wong
    Duane Wong Jul 10, 2010

    what is a plu?

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2 Answers

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  • Master
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While engine running, disconnect cylinder 7 injector, if rpm drop injector ok, now check spark at coil, unscrew 8mm bolt form coil pack, lift up on it a little from spark plug, if you hear spark, coil pack good, replace coil pack boot.That works like a spark plug wire.

Posted on Jul 10, 2010

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  • Master
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Well you all ways change all the plugs at the same time,,,not just the one thats missing! (thats being tight) and your just making trouble for yourself,,, talk about sinking the ship to save a pennys worth of tar! ...and in whats called a "wasted spark engine" were the spark to one plug runs into that plug through the head and up the other plug back to the coil it dont much like what you have just done?,,,so in short,,,do yourself a faver and go out and buy a full set of plugs,,,then put them all in,,,all 8 of them! not 7,,,!!!
dump that one you just put in,,, if your car could talk it would be saying,,,why are you soooo cheep! look after me or il stop on you!

Posted on Jul 10, 2010

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