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Old 10-08-2018, 01:18 AM
Mous Mous is offline
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Re: 97 Chevy S10 with WEAK SPARK on 1 Clyinder only

I have a '94 2.2 with that problem, at least similar: the spark was strong but erratic. turned out to be voltage variations from a loose big wire connection at the alternator, the other cyls just weren't affected as much. might be worth a look. made my gauges, headlights and dash lights waver especially going uphill.
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