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Old 05-12-2017, 10:56 PM   #19
Chuck Sea/Tac
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Join Date: May 2010
Location: Between Seattle & Tacoma
Posts: 2,354
Default Re: Ruff Idle problem

Have you got one of those voltage testers like brattons 17150? You stick in the rotor cap with the coil wire into it upper end. Then you can increase the spark gap and watch it spark, watching for misses. Also a clear rotor cap, or a cut down one will work as well. It has helped me find an erratic spark before.
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