Hesitation and looses power and knocks bad above 3800 rpm - Pontiac G6 Forum
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Hesitation and looses power and knocks bad above 3800 rpm

Posted 09-01-2010 at 11:15 AM by mjmike63

My '08 G6 2.4L with 63K highway miles hesitates from stand still and looses power and knocks bad above 3800 rpm. I changed the fuel to make sure it wasn't bad, pulled the plugs and they look good, checked connectios under hood and checked fuel pressure steady at 60 psi even when loosing power above 3800 rpm. Only logs code P0300 mult misfire if I keep it above 4000 rpm for more than a few seconds. Hopefully this is something some one has seen befor...
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  1. Old Comment

    cam

    It sounds like it could be that your cam has a flat spot on it. It's normally caused by over revving. :/ Not fun but you can always put an after market hot cam in there with some timing gears on the bright side...
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    Posted 09-15-2010 at 08:02 PM by Gtpvandemark Gtpvandemark is offline
 
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