I'm having issues with my 95 z28. Recently had problems with the car starting and flooding out. After those issues the car started to idle a little rough and pop out of the exhaust. I never had these issues till after the hard starting. I replaced plugs, and nothing changed. If anyone has any suggestions please help. This car is driving me nuts.

 

Check fuel pressure and scan for codes

 

check full injectors as well, one could be leaking causing the raw fuel to hit the hot exhaust causing popping.....

 

make sure you have all the plug wires in the correct order after changing the plugs.

 

Sounds,like opti my car had the same problem

 

Are there any codes? Check FPR hose for fuel and fuel PSI, make sure your wires are on the correct plugs.

 

i'm having almost the same problem with my 94. Replaced plugs, wires, o2 sensors, gutted bad cat, fuel filter, and quite a few other things. Just not the opti yet. And the problem is still there. So cap and rotor is next.

 

Loose rotor on the opti is my guess.