Hopefully you guys can give me some help with my blazer. I got a '94 S10 Blazer with a 4.3L Vortec CPI. Here is my problem. When I try to start it, it takes like 10-15 attemts just to get it to start. Sometimes if I hear it fire I can floor it and keep pumping the gas and it will start to run really rough until I hear it smooth out I let the gas go and it will idle normal. Once its running it runs rreally good with no problems. If I immediatly start it right after shutdown it starts normaly. If it sits more than 2 minutes it goes back to my problem.

Here is what I have replaced and checked.

New fuel filter
New spark plugs
New wires
New coil
New knock sensor (due to a code 43)

I checked for spark = good
Checked fuel pressure = approx 45 psi when I prime

I got no more trouble codes....

What next? TPS? Cap and Rotor? what about the EST or injectors?

 

This site is specific to ThirdGen F-Bodies. You should try posting in a forum more specific to that model, such as http://www.automotiveforums.com/vbul...lay.php?f=2072