97Camaro007

Ok I just did a cam swap on my car but i also changed out a couple of more things and now it won't start....I added a 52mm TB, Walbro 255 lph, SVO #30, Aeromotive FPR, XE 236/242, and all of the comp valvetrain...and now my car won't start....I have fuel put a gauge on it and its set at 40 psi.....thought it might be from fouled plugs....changed the plugs and still no fire.....it just turns over and over....Thought i might have gotten some bad injectors so put the stock injectors back in it and still no start....Checked the wires for fire with a timing light and all of the wires are firing or most of them anyways (Couldn't check a couple) So I got gas and fire so now i'm wondering about the timing....I had the computer tuned for all of this stuff at pcmforless but he didn't give me a print out of all of the stuff that he changed....(Wish he would) I even changed out pcm's with another 97 6speed car here in town and still no fire....maybe the crank position sensor is out or something....I mean i got fire it's just not hitting right.....my pcm even started in the other car that i swapped with...it was hard to get it started though.....I know that the cam is dot to dot.....i checked it about 2 or 3 times before i put it back together.....If anyone has anything that would help i would sure listen.....Thanks

Michael

Spinner

rocker arms too tight?

HBHRacing

I'll take a stab and say timing is off or there is a problem in the valvetrain

97Camaro007

I adjusted them but i didn't adjust them after the lifters were pumped up.....i gave them about a 1/16th of a turn after there was no slack on the pushrod.......? Would that make it not crank?

Spinner

No, that's a fine adjustment... is your TB opening enough to give the engine enough air to idle? Can you WOT start the motor?

HBHRacing

wonlt that clear flood it?

97Camaro007

I compression tested the cylinder holes also.....the all checked out 180 on each cylinder.....It won't start with WOT....

Spinner

It shouldnt.

Spinner

It HAS to be a timing issue then. Your getting air, fuel, spark. The engine cranks, so the valvetrain is not binding. All that leaves is timing

97Camaro007

I know but i know for a fact that the cam is in right....I know for a fact because i spun the engine around and the dots lined up ever other time the engine was spun around... What else controls the timing? Crank Position Sensor?

HBHRacing

but with good compression on all cylenders? if you were a tooth or 2 off it might give you a low compression readong on a fe cylenders...


try swaping the stock FPR?

97Camaro007

Swap back to the stock FPR? I know that it's working properly though because i can adjust the fuel pressure.....I mean i even tried cranking it at 50 psi of fuel.....still nothing

HBHRacing

I know someon that had an issue with there aromotive unit. it's worth a shot if you ae out of ideas.

are you sure there is not a vac line off?

how about TPS voltage?

97Camaro007

I will try it......I don't have a volt-meter with me to check the TPS? What voltage does the TPS have?

HBHRacing

at closed throttle it should have around .5- .75 Volts give or take