I was driving around two days ago and it started missing really bad. Pulled over and it ran fine. Went home and started it the next day and it was missing again, but it didn't stop. Popped the hood and checked for spark with a test light and didn't have it at 1 and 4. I have a MSD box and I'm trying to see if anyone has ran into this before. Need to get this thing fixed so I can drive to work.
Everything I found on the search was for no spark.
Thanks for the help
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#130047, "RE: No spark on cyl. 1 and 4" In response to Reply # 0
if it's just 1 and 4, you either lost a spark circuit on your MSD, the spark trigger to that channel on your MSD is loose / disconnected, or that coil in the coil pack is bad.
Check the trigger wire before and after the MSD with a testlight / multimeter. You should see a short pulse to ground when it attempts to fire that coil during cranking.
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'95 Eclipse TurboGS (garage deco) '95 TSi AWD (restoring a survivor) '97 Talon ESi-T (poor impulse control) '99 Eclipse RS-T (daily beater) '13 Evo X (mostly stock) '17 Sienna (Middle Aged Dad Mobile)
#130069, "RE: No spark on cyl. 1 and 4" In response to Reply # 2
Depends. If you can track the trigger signal to the MSD box but not beyond it and the wiring checks out, i'd say its a bad MSD.
Double check your wiring and see where the ground pulse stops. Work backwards from the coil.
______________________________ If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.
'95 Eclipse TurboGS (garage deco) '95 TSi AWD (restoring a survivor) '97 Talon ESi-T (poor impulse control) '99 Eclipse RS-T (daily beater) '13 Evo X (mostly stock) '17 Sienna (Middle Aged Dad Mobile)
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