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first pull the spark plug boot off and check for tracks, then check the spark plug condition , it's gonna be 1 of 3 things the spark plug itself , injector , or spark plug boot. it could also be the plug wire.

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Q: Your 1995 mercury cougar XR7 V8 is running bad its seems like it is idling and shaking you got it read and it misfiring in cylinder 1 what should you try to fix it?
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