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99 Pontiac grand am is skipping on 2 cylinders?

Updated: 8/16/2019
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16y ago

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Run a compression test. If compression is low you have either a blown head gasket or burned valves. If that's not the problem, check the plugs and wires. If that's not the problem, check the coil pack. Each coil pack operates two plugs.

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16y ago
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Q: 99 Pontiac grand am is skipping on 2 cylinders?
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