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Q: no 2 cyimere misfire on 1998 Volvo S90

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
rough idle
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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Engine cylinder misfire can be caused by a bad spark plug, bad spark plug wire or ignition coil, the triggering mechanism for the coil (ie wiring or computer issue), mechanical issues in the cylinder (low compression due to a worn cylinder bore or piston, or valve problem/clearance). Misfire can be caused by a bad fuel injector or intake manifold leak allowing in un-metered air. Its impossible to pinpoint the problem without being able to do basic diagnostic tests.
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