Missing after heads and cam.....need help
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From: Fort Mill SC
Missing after heads and cam.....need help I just got done with my ls1 heads cam swap and i looked at my misfires and i am showing a miss on every cylinder but not a dea mis just hear and there...i have hypertech tune on my car right now but nothing yet for the heads and cam...the cam is a 230/236 571lift cam...could i just need a tune or is it more serious??
everything looks good...all wires on and spark plugs tight
thanks
Dustin
everything looks good...all wires on and spark plugs tight
thanks
Dustin
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From: Fort Mill SC
has anyone else had a problem with bad missing after a head and cam install??
I am also not able to rev it up past about 4300 rpms....even at full throttle...it's like it's just not getting all the air and fuel it needs...anyone ever seen this be4??
I am also not able to rev it up past about 4300 rpms....even at full throttle...it's like it's just not getting all the air and fuel it needs...anyone ever seen this be4??
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From: Fort Mill SC
no i have not had a backfiring problem...but the engine missing badly...the whole motor will shake....i guess there is a chance i could have mine on backwards as well i will have to double check that
thanks
Dustin
thanks
Dustin
Well, if its not backfiring then I dont think thats your problem. Mine was backfiring bad so I turned it off and then thought.. hhmmm, wonder if the harness is backwards. And sure enough it was and it purred like a cammed beast!
So your saying you get "missfire" on all 8 cylinders?
I know on my 04 Z71 I had a bad O2 sensor on one side wich caused the motor/truck to sputter and shake. Technically, it was sensing lean so it would throw alot of gas in that side of the motor. Had it scanned it said "misfire".. Just a thought.
So your saying you get "missfire" on all 8 cylinders?
I know on my 04 Z71 I had a bad O2 sensor on one side wich caused the motor/truck to sputter and shake. Technically, it was sensing lean so it would throw alot of gas in that side of the motor. Had it scanned it said "misfire".. Just a thought.
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From: Fort Mill SC
yes i am saying that there is a mis on all 8 cylinders....no real dead spot just a random miss ....also the car won;t rev past about 4500 rpms
Last edited by Formula_Power; Aug 9, 2006 at 12:32 PM.
Thread Starter
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From: Fort Mill SC
Yea I am starting to think it's got to be the tune because i have double checked almost everything and found nothing...i just didn;t think it would run so aweful without a tune....i was faster when i was stock
thanks
Dustin
thanks
Dustin
Last edited by Formula_Power; Aug 11, 2006 at 09:49 PM.
