Is there an easy way to tell if your opti spark is goin bad? i believe mine is, if you read my previous post about how my car chugs youll know why i am being lead to this conclusion... so if there is an easy way to tell if your opti spark is going please let me know...

Jon

 

What year is your car? All LT1's are not the same. All years will set a trouble code in the PCM for problems with the optical section. None of them incorporate any direct checks on the high voltage function. But the OBD-II's will detect misfires by cylinder, and that might point you to the Opti if they are "random".

Shoebox also has a procedure on his Tech Pages website for verifying the optical signals.

http://shbox.com/1/4th_gen_tech2.html#opti_test

If you haven't used Shoebox's website before, bookmark it, because it is one of the best resources available on the 'net.

 

i have a 95 m6 z28...if that makes any difference, and you may be able to determine my problem Injuneer, i have been having major chuggin problems ever since i had new plugs and wires installed. at about 1/4 throttle in any gear except first, the car chugs as if it is get gas and not getting gas/ sparking and not sparking... i was told this could be a possible misfire, arching and a few other things, any ideas as to what id wrong with my car? everyone put your heads together!

Thanks
Jon

 

If it started after the work, I would be checking over what was done. May be some plug wires mixed up.

 

I agree with Shoebox..If it was OK before, then what's going on now.?..My car acted similarly and it was a burned plug wire. It was highly noticable lugging along in overdrive. Re-check all routings and firing order. Also make sure that the ends are completely snapped onto the plugs and into the opti. If you crimped your own, then re-check the opti ends where you crimped 'em...Good luck...
--Alan