What did I do wrong
12-15-2008, 02:00 AM
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What did I do wrong Ok here goes, I swapped out my zz-409 cam for a stock cam drivability and fuel reasons. Upon turning it on the car idled fine then when i tried to give it gas it starts to backfire really loud. could it be that i adjusted the RR wrong. i took the pcm to get flased back to stock setting so i dont think that would be the problem. help please
12-15-2008, 02:13 AM
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it could be checking a ton of diagnostics on the car, same thing happens with a new battery, did you drive the car at all since this happened, it could also be that the reflash didnt go well.
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12-15-2008, 02:16 AM
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no i have not driven the car i dont want to risk it with all that backfire. so u say it could be to tight i went with 3/4 of a turn since i put back in all the stock components exept springs.
12-15-2008, 02:27 AM
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the thing is that it back fires really loud and as soon as i give it gas is when it does it. i doubt the RR are to tight but i could be wrong. At this point i will try anything 
12-15-2008, 05:11 AM
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Well you are on the right track since you are willing to admit you may be at fault. Seen a lot of guys fight admitting that possibility and waste a lot of time and money as a result.
The mechanical timing concern is one I share, but easier to check would be the rocker adjustment. How did you find zero lash?
The mechanical timing concern is one I share, but easier to check would be the rocker adjustment. How did you find zero lash?
12-15-2008, 08:29 AM
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as far as the wires never even took of the plugs and wires so id cross that one out. If in fact i did mess up with the timing dots how would i fix that or check more acurate
12-15-2008, 08:51 AM
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^^From what I know you'd have to pull timing cover to check timing. This is just a thought but if you indeed had dots lines correctly you might have had #6 at TDC instead of #1. Someone let me know if this correct or possible.