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Weak Spark/Coil Check?? 200 1986

Everyone,
I was checking spark on my 86 245 chasing down poor idle. I had the lead off number 1 cyl with a good spare spark plug while the engine was running (albeit a little rough) I was told to check out the health of the spark by looking to make sure it is nice blue colour.
Mine is blue but with a fair bit of orange/red. Is this a vaild check? if mine is too reddish should I replace the coil?
Karl






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New Weak Spark/Coil Check?? [200][1986]
posted by  sandkv  on Sun Jun 30 17:15 CST 2002 >


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