Guys,
I was helping out a friend today to finish putting his stuff together after a stage 2 heads/cc306/hookers install. We refilled the coolant system, added oil, connected pretty much everything minus the oxygen sensors, airbox and belt, and the removed emissions, tried to crank it but it would not fire. After a few more attempts, it backfired LOUD (we were in a garage) twice. I think it backfired through the intake because there was smoke coming out of it.
We double checked the wires for correct firing order, and the injectors too. Everything looks fine. The pump primed, but the starter seemed to act as if it had no load on it, although my friend said he saw the crank pulley turn. Also, the timing chain was installed properly and he said the roller rockers were moving before he put the valve covers on when he assembled it, so the cam is moving. Anyone have a clue as to what the problem may be?
Thanks.

 

well you may need the program ...and also your probly flooded by now.

open the blades on the TB and try and start it, and make sure you ahve a program...my buddy sean just finished his heads and cam and his wont stay running more than 1 second. if i hold the gas it will stay running...i think its all in the programing

 

Doubt its the programming, these cars will run without programming with any cam, thats not to say they will run good, but it will run. Double and triple check the wires, spray some electrical connector cleaner or wd40 on the plug wire connectors, and also use some dielectric grease to keep a good connection. Just triple check every electrical connection, and also the vacuum lines, make sure you have them all there, especially the one going to the fuel pressure regulator, without that you wont get any gas or too much gas, forget which way. good luck.

 

Well I ran freescan and somehow it said my desired idle was 3100 rpm's. Something was screwy w/ the computer but I flashed it last night with the new program and I am going to try starting it up in a little bit (allow neighbors to sleep a little). The car will stay running if we crack the tb blades a little (maybe 10% or around 1.0v). Hopefully, it'll stay running on its own now that it has the new program.

Otherwise, I will have to double and triple check everything again and go from there. Maybe the roller rockers are too tight. Is that possible?

I'll post a new thread if my car still doesn't run right w/ the new program and see if you guys have any ideas then. Good luck madwolf.

 

Did the motor sound like it was cranking normally?. Or did it sound like it was just spinning? Mine did the same thing. I found out that the Rockers/valve lash was adjusted 180 degrees out of wack. Done by me of course. It back fired a bit too. Re-adjusted & poof. It started right up.

 

Are you sure you installed the dowel from the cam in the right slot for the Opti? Believe it or not, it is pretty easy to do. Just a thought,

Kyle

 

Check the IAC counts, I would bet they are sky high. Programming will effect IAC counts somewhat, but the TB may also have to be modded to allow for more bypass air.

 

I saw this on my 94 when the Opti was dying, so maybe you installed yours incorrectly. I did this myself on the 94 also, the splined shaft isn't supposed to slide on without it being dead on, but it wasn't that hard to do. I put a paint mark on the timing cover and dowel, and had the dowel in the Opti to try and get it lined up correctly. Then make sure that you can slide it in and out easily, and do that a couple times, and it should be almost friction free.

If you have a 95 setup, there are 3 spots in the back the dowel could fit into, even though it is only supposed to go into one of them, and it is the oddball spot that it goes into, which is a bit deeper.

 

Well my problem was we didn't hook up the brake booster, so there was a massive vacuum leak. Once we hooked that up, the car idled pretty good at about 800 in neutral and 400 in gear. We then adjusted the idle screw and got it to idle at 600 in gear and same 800 in neutral.

See this post if you wanna read about my big problem.
http://web.camaross.com/forums/showt...hreadid=106429

Everyone seems to be having problems with their heads/cam projects. DOH!

 

did you measure the dowel pin length? i got a comp ex and the pin was .200 to long i lost two optis be for i figured it out.opti appeared to go on fine but the dowel bottomed out and put preasure on the shaft resulting in a broken retainer bolt inside the opti. lesson learned never assume anything.
matt

 

did you measure the dowel pin length? i got a comp ex and the pin was .200 to long i lost two optis be for i figured it out.opti appeared to go on fine but the dowel bottomed out and put preasure on the shaft resulting in a broken retainer bolt inside the opti. lesson learned never assume anything.
matt

We cut down the dowel pin and checked to make sure everything went on right with the timing stuff. So for now I think I can rule that out. Anyone else have any ideas?

 

i put my opti in wrong it would start if i held the gas done but it would sound like only a couple cylinders were firing then it would die. i think that might be your problem

 

OK Guys, it was the rockers. Thanks Smokn '94 Z and all others!
We started this thing yesterday and my hearing wasn't the same anymore since...
Stay tuned for soundclips... I'll take some later today....