Car has no power after rebuild???

[Bmxr152]

I have put at least 100 miles on my talon since it rebuilt it. While i rebuilt it i did the fuel filter, rod bearing, wiseco pistons, cosmetic head gasket, and arp head studs. two days ago i was driving to work and it ran perfect... when i started it up after work it was horrible. I drove away and had to PIN it to get going . I reved it up in nuetral and took like 6 seconds to get there, WTF. New spark plugs today and still runs the same. Is it unusual to have the dipstick to come out a little while reving it? it also shows 43 counts of knock at like 20% throttle up to 100%. My car boosts to 7 psi but still take like 30 seconds to get to 60

 

[nightspeed87]

yea that sounds horrible, what all was involved in the rebuild and I would say check the timing first, check for exhaust obstructions like a bend in the pipe under the car, check to see if its even holding oil pressure, and check your compression.

 

[Bmxr152]

alright took cat off, timed it so its 8-10 degrees, and runs better but still slow. Oil pressure it in between the two lines. I think i have a boost leak. Would that take low end power away?

 

[BeerBaron]

check your knock sensor for goo, but that should retard your timing enough to make it run as bad as you describe. A boost leak can definitly cause bogging and throttle hesitation, it's def worth a shot considering how easy it is to do. Did you check your timing marks on the cam gears before you did the timing light? If it skipped a tooth or two it may run like you are describing.

 

[Bmxr152]

no the cams are perfect. Oh ya my knock sensor is going wack too. at like 20% or more throttle it shoots all the way up to 43 countof knock and doenst go away until i let the gas off. It doesnt matter what gear what RPM, but just over 20% throttle? Could that be causing me to be loosong like 50 Hp or so