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Hello,
Myself and a friend recently replaced the following on my 03 Malibu.
Lower intake manifold
New Felpro gaskets
Coolant temp sensor
Thermostat
Spark plugs
Spark plug wiresThe car now has a random misfire happening. When the car idles I can tell something is missing. SPeeding up slowly i can feel it hesitate at times, but giving it full gas there is no issue.
Any ideas what else it could be?
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