C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Intermittent miss

 
Old 04-13-2019, 04:29 PM
  #1  
Jonnydext
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Default Intermittent miss

Hey all, Iíve been having a problem with my lt4. It started throwing codes Indicative of a bad opti... changed it with the petris...imediately after installation started throwing codes again.. Send it back and it was a bad opti and they replaced it.. now no codes but itís skipping ... getting intermittent Skipp on cylinder 3 ... seems worse under load ..tried new plug and wire.. then switched injectors still skips on three and no problems on the cylinder with the Number 3 injector now Iín it ???
Baffled The chances of two optis being bad is pretty slim ... right?
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Old 04-14-2019, 11:12 PM
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Kevova
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Skips are hard to figure out many times. A scanner with a misfire counter parameter or a Automotive Ocyliscope could indicate where to look. Plug gap, wire resistance, coil output, and grounds are all.possible causes.
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