Ok i just yesterday install a set of comp 272 cams a fuel pump and a new timing/balance belt on my car... The problem here is now the car is much slower even after a tune. Its throwing a ton of knock @ about 6k. starts fine idles fine wonder what it could be.... could this be a fuel pickup issue?

 

Recheck your valve timing.

 

it could be that you installed the cam shaft positioning sensor bracket 180 degrees out.......its the metal piece on the end of the exhaust cam....

 

hmmm checked it twice before i buttoned everything up.... if it was a tooth off seems it would barely run right?

 

would it still idle normal like that???

 

its wierd that it still idles normal, it has to have something to do with the timing. If it was a tooth of i should run very very crappy. Like some1 said the cam position sensor might be 180 out, but if you check it, you checked it. GL with everything

 

yeah i mean the car runs excellent off boost.... im starting to wonder if i have a bad fuel pump might try to reinstall the stocker.

 

sounds like you are off a tooth. happened to me, was getting tuned at shiv's and he noticed the curve dropped off after @4.5k rpm's IIRC. but idled and ran pretty good, just didn't have power up top. double-check your belt/cam gear timing. now, it runs like a champ.

good luck...

slvrevo

 

Yes!! I had that happen on my Talon years ago. The place that had done warranty work at when I snapped my timing belt did that mistake. The car idled great and ran great off boost, but the full throttle power was way down. My car fell off over 5/10's in the 1/4 mile alone. Check out cam position sensor as rraulston suggests.

 

ugh just so happens its raining here today how nice lol no garage

 

ok problem solved daaaaaamn it pulls good!

 

What did you fix?

 

it'd be nice if you shared your fix with us haha

 

ahhhhhhh....what was the problem

 

what a tease. he must have just been really excited ha ha