I have a 95 camaro with a 93 LT1 that wont start until the 3rd or 4th crank. Fuel pressure is good, fuel pressure regulator, injectors, fuel pump all functioning well (trust me on that - all new delco parts). Engine coolant temp sensor is good. I accidentally discovered that the car will start (turn right over) when the break booster line is disconnected from the break booster. The car was had the cat, egr, and evaportator, removed before I bought it. Why and I know I'm on to a solution but need help. Thank you, Dan

 

how does it idle once it starts? is it rough and at what rpms. are you smelling fuel at startup? how do spark plugs look?

 

It idles very well. RPM just under or over 1000.

 

spark plugs and wires are brand new. New optispark.

 

Have you check the spark with a spark tester. Maybe there is a delay. You may want to get a noid to check for the fuel injection pluse. If you have fuel and spark and compression something should happen so which one is coming late?