Thread: What happens if I mix up spark plug wires?

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  1. #1
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    Default What happens if I mix up spark plug wires?

    Lets say I mixed up and crossed over two spark plug wires. What is the worst that could happen and how the car will behave to show me that I missconnected wires to the wrong cylinders?

  2. #2
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    Default Re: What happens if I mix up spark plug wires?

    are you high or serious?

  3. #3
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    Default Re: What happens if I mix up spark plug wires?

    It will not run right! The car will be misfiring, the valves / pistons will not be in the correct position for the spark detination

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    Default Re: What happens if I mix up spark plug wires?

    hey-lets say i weld some wings on my car-will it fly?

  5. #5
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    Default Re: What happens if I mix up spark plug wires?

    Quote Originally Posted by bluesrt View Post
    are you high or serious?
    Yes, yes, I know stupid question, I don't think I ever had the issue of crossing wires, so I don't know how the car should behave in case I did.

  6. #6
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    Default Re: What happens if I mix up spark plug wires?

    You could potentially destroy the intake and/or blow the gaskets or worse especially if you ignite the intake stroke...

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    Default Re: What happens if I mix up spark plug wires?

    What makes you think you have a wire installed wrong ?

  8. #8
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    Default Re: What happens if I mix up spark plug wires?

    As others have mentioned, the car will run like crap (rough idle and misfire). And if you don't know what 'runs like crap' means, you'll know that it now doesn't sound or feel (shakes more) the same as it did before. Rule of thumb when changing wires: Change them one at a time!

  9. #9
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    Default Re: What happens if I mix up spark plug wires?

    Quote Originally Posted by Flexx91 View Post
    As others have mentioned, the car will run like crap (rough idle and misfire). And if you don't know what 'runs like crap' means, you'll know that it now doesn't sound or feel (shakes more) the same as it did before. Rule of thumb when changing wires: Change them one at a time!
    Ok, thank you guys. I am safe for now .

  10. #10
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    Default Re: What happens if I mix up spark plug wires?

    "Whatever you do, don't cross the streams!"

  11. #11
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    Default Re: What happens if I mix up spark plug wires?

    it will run like a corvette

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    Default Re: What happens if I mix up spark plug wires?

    Quote Originally Posted by Chelseasnake View Post
    it will run like a corvette
    Ive got to tell the corvette owners in my family that one.

  13. #13
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    Default Re: What happens if I mix up spark plug wires?

    Quote Originally Posted by Chelseasnake View Post
    it will run like a corvette

    LMAO That was the best laugh I had this week. Like the above poster said, change one at a time. I have in my youth crossed wires on my old DD and the results weren't catastrophic because I turned it right off rught away but lets just say it didn't sound good.

  14. #14
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    Default Re: What happens if I mix up spark plug wires?

    If you have to ask this very question, I would say maybe someone else should fix your wires for you. The answer is simple, pull them all off and install them one at a time according to the firing order. They are geneally length specific to the cylinders.

    If you get them wrong, the car will A.) not start at all or B.) Run like crap. If B.) then shut car off immediately and figure out where you went wrong. That very brief few seconds runtime on improperly wired coils will not hurt it, just don't let it run forever and start reving it up. You should know within 1/2 a second if it is wired wrong. If you can't figure it out, again maybe you should not be working on that part and get someoe else to do it for you.

  15. #15
    Venomiss
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    Default Re: What happens if I mix up spark plug wires?

    Get a picture of your engine before starting to change them out so you have a reference for yourself.



    Don't cross the streams-too funny. Is he the keymaster or the gatekeeper?

  16. #16
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    Default Re: What happens if I mix up spark plug wires?

    Hmmm I thought it would just sound like it had a large cam in it??

    Tony2

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