The 1999 Chevrolet Malibu is part of the fifth generation (1997-2003) manufactured by General Motors. This is the first smaller, front-wheel-drive Malibu that General Motors put back on the market after the Malibu line was temporarily discontinued in the early 1980's.

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Random misfire changed the spark plugs

Sensor reads "random misfire".changed out the spark plugs worked better still really rough though.then it went back to the way it was before .sounds like it's running on 1 cylinder.this happened all the sudden.what should I do.think there was some oil in the gallery where the spark plugs go

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If your plugs have oil in the chutes you need to change the valve cover gasket . this may be your problem but it would be nice to know what code its throwing is it a p0300 or is there a cylinder attached to the code. like maybe p0301 or another code . If there's a lot of oil it can destroy the coil-pack

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