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Old 09-07-2001, 10:50 PM   #1 (permalink)
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I think I've narrowed down my rough idle problem to the ignition system. Noticed tonight using a spark tester that one of the cylinders (no. 2) has a very weak spark. I also noticed that all of the plugs had an intermittent miss.

I ruled out the spark plug wire by swapping it with another. Coil is brand new, plugs are new as well. Cleaned the dist. cap and didn't see anything out of the ordinary in it.

Anyone know what could cause one plug to have a weaker spark than another? And any thoughts about the intermittent miss on the others?

Thanks.
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Old 09-07-2001, 11:07 PM   #2 (permalink)
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gonna take a guess at a worn Distributor cam
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Old 09-07-2001, 11:13 PM   #3 (permalink)
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WOW!! now you popped my baloon I can't believe Teebone is guessing I thought he knew everything
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Old 09-07-2001, 11:15 PM   #4 (permalink)
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ALSO TRY ANOTHER CAP AND CHECK THE BRAKER PLATE TO SEE IF IT IS WORN OUT ALSO LOOK AT THE CONDENSER
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Old 09-07-2001, 11:30 PM   #5 (permalink)
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Gee didn't mean to burst your baloon... its late..I'll try another answer in the morning..*LOL*
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Old 09-07-2001, 11:50 PM   #6 (permalink)
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You might try swapping plugs from hole to hole to make sure it's not just a problem with that particular plug (narrow gap or shorting to ground internally). Also, have you checked compression? A weak cylinder takes less voltage for the spark to jump the gap, so the coil won't build as much voltage on that hole.
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