Re: P0300//mulitiple misfire
Like Ryan said, get them to do a leak down check. That was how they confirmed my problem. They have done several at the small dealership I go to.
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Traded 06 I-5 for 08H3 ALPHA/Adv,WarnPowerPlant9500,Warn 9000ti rear,Steelcraft brush/winch mt,RockyRoadrails/Hunner mod,GMUCP,Hunner rear/shock skids,OEM roof lights,Rola rack,2GoLights,Hunner steering gear mount,Purple Cranium diff guard,BulletProof tie rods,ARBsnorkle, SyKlone prefilter,Hunner intake pipe.
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