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Spark plug question

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Old May 22, 2004 | 11:57 PM
  #1  
Skyhawk's Avatar
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From: Harrisburg, NC/Jacksonville, FL
Question Spark plug question

If you have bad spark plugs, how much can that affect performance? Like will it make the acceleration bad or will it make the car harder to start or what?
Old May 23, 2004 | 12:03 AM
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BOTH!
Old May 23, 2004 | 01:46 PM
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From: Chilliwack, BC, Canada
Like you said - you'll feel it in the acceleration, it will be reluctant to start - and you'll get poor fuel economy.

They would have to be pretty bad for those things to start happening.
Old May 25, 2004 | 11:49 AM
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my tuner told me that the worst case he has ever seen was someone that swapped out bad/wrong plugs, to good/right plugs, and picked up 31 rwhp!!! it is worth the change!!
Old May 25, 2004 | 03:00 PM
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Red95M6Z28's Avatar
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You may have bad plugs but you may have bad plug wires also. Bad plug wires will make your car run like dog doo doo.
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