Thread: misfire cyl 6
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Old 06-30-2008, 10:53 PM
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Re: misfire cyl 6

Fuel pressure and leakdown are OK. If the same DTC came back, try the cap and rotor first. If the cap and rotor are not AC Delco, replace them with AC Delco parts. If it still gives P0306, there may be a problem with an injector, a vacuum leak, or any one of a host of other things. Just take one step at a time. What brand of plugs and wires are you using?
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