Hello I have a 96 Camaro z28 lt1 it cranks but wont start I put a new opti spark ,ignition control module, throttle position sensor and it still wont do nothing but what I have seen is there's gas coming out of my exhaust any advise. Thank you

 

Are there any codes? Do you have spark? Is there a flashing security light? Are the injectors pulsing? Did you check all of the fuses in both the cabin fuse box and underhood fuse box?

 

Unfortunately, "Site Help & Suggestions" is for reporting operational problems with the site - passwords, how to upload photos, etc. NOT for tech problems with our cars. I'll move this to "LT1 Based Engine Tech" for you.

Were all those new parts replaced because it wouldn't start? If so, what brands were they? For example, the cheap Chinese ripoff Opti's on ebay often don't work right out of the box. Did you do any diagnostic work BEFORE replacing the parts - check PCM for codes, check fuel pressure, check to see if the Opti is sending the required cam position info to the PCM, check the SECURITY system? If so, what were the results?

Is the engine stock or modified? If modified, what are the mods? When was the last time the engine was started and running? Do you actually see liquid fuel running out of the exhaust? That would indicate serious flooding. Checking the fuel pressure will help identify badly leaking injectors or fuel pressure regulator. Did you check the vacuum compensation line from the fuel pressure regulator for wet fuel?

 

had the same issue, turned out i needed new coil and coil wire.. follow the run down steps in both posts above and provide updates.
hope you get it back on the road soon..