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International Automotive Technicians Network
Re: Quad 4 ? 3? 2? 1989 Grand Am
Posted to Technical Discussion Forum on 3/7/2002

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Gotta love 'em.

I have noticed the scope patterns you have shown on the primary circuit as well anytime there is a misfire from injectors. The cool thing is that it always affects its mating cylinde... Login to read more.