'93 Back fires through intake
Thread Starter
1st Gear
Joined: Mar 2009
Posts: 1
Likes: 0
'93 Back fires through intake
I have a '93 LT1 and it has been missing for a while now. I put Lucas injector cleaner in the tank for the last month at every fill-up but the missing just got worse. Now it seems as if It's out of time as it will missfire and pop in the exhaust. Any help will be welcome, thanks steve
Instructor
Joined: Jan 2009
Posts: 129
Likes: 1
From: Tucson AZ
I would post this question in the Tech/Perf section to get some feedback. If you can read your codes, that could help you. Autozone, Checkers, etc. have code readers you can borrow them. If I had to guess, it might be your OptiSpark as those seem to be the weak link on these cars. Sometimes, your water pump will start leaking and it ends up in the Opti and causing your problem.
