Right before we found a blown head gasket...which has since been fixed, the car was starting hard, to the point I would have to pump the crap out of it to get it to fire. At first I thought it had to do with the idle air control, as I blocked off the hose I added to the TB intake to make it idle after the recent buildup. I adjusted the computer, and didnt need the helper tube/mod any longer. Well tonight, I removed the block on that and I still have the same problem. Any body have any ideas as to what it could be? It was professionally tuned at Detroit Speedworks, and everything was fine. Now 3 months later it suddenly is being a pain in the ***. I just dont get it. Ideas please.

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Unfortunatly I have checked them all except one. I will recheck my fuel pressure tomorrow. That is always worth a look.

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My '94 Z28 had the same problem until I replaced the O2 sensors. Damn, it's been a few years--forgot if it was 1 or 2.

 

Same problem I had, it was my fuel pump. The pressure would prime up to near 40psi then drop to 0 since the pump couldnt hold it. I recently replaced it and even with the CC306 it fires up instantly.

 

i had a fuel pressure regulator go out and i bled fuel when the pump was off and sprayed fuel when the pump was on

just an observation
Faded

 

Mine used to take 2 tries to start, I took the TB off today cleaned it up real good and installed a new IAC and TPS and since I was in there I went ahead and did the TB coolant bypass. Starts up first try everytime now.

 

Thank you for the ideas guys. I am going to check the fuel system tonight when I get home from work.

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Thanks for the help guys, it was the AFPR it was leaking into the vacumn line. Put the stocker back on and it is running better then ever and starts first try.

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