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  1. S

    5.7 coil issues

    How do you check this?
  2. S

    5.7 coil issues

  3. S

    5.7 coil issues

    I will try this as well
  4. S

    5.7 coil issues

    No I haven’t, I’ll look into that
  5. S

    5.7 coil issues

    I’ve put boat on the water 3 times, all three times it has died, first time it lost spark and I replaced just the coil. It happened again the next time, died, no spark. I replaced the coil and the pickup sensor, genuine mercruiser parts, boat ran great, went for a few hour ride, thought that...
  6. S

    5.7 coil issues

    Ok that’s what I was told, and the distributor and everything was what was original to the 94 so then that should check out. I’ve checked the ground a few times and cleaned them too, may check them again though, thanks, not sure where else to look.
  7. S

    5.7 coil issues

    i put a 94 mercruiser 5.7 with a thunderbolt 4 ignition in my 96 crownline that had a thunderbolt 5 ignition and i keep burning coils, i replaced both coil and sensor in the distributor, runs great for awhile then just quits, is it something to do with putting the thunderbolt 4 in when the boat...
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