LT1 no spark
LT1 ran for 8 months with no issues. until last week.
8 months ago that i replaced the opti it had no spark and ran fine for 8 months.
now it starts up sometimes. last week it stalled out. so now im checking for spark and no spark either, but the problem is i dont get spark and car still turns over and runs.
i get 42psi on fuel pressure. like i said opti is 8 months old. i tested around 4 spark plug wires and no spark. the thing i dont understand is i get no spark and engine turns over and starts.
Heres a video. hopefully im not confused.
http://youtu.be/nZ4jNVt6TRE
From my undestanding. 1st the PCM gets the signal. then PCM to Optispark, then opti to ICM, then ICM to Coil, then to optispark again.
The wire that goes to the ignition coil to the optispark. the end of the cable to the optispark does get spark.
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lol.i went ahead and took the optispark out. world record for me. took me 1 hr 30 minutes to take everything out to optispark. im going to go ahead and change oil pan and timing cover gaskets. i feel so accomplished
. hopefully i come to find out that the timing chain is a bit loose and that should the main issue. 


