1999 Johnson 200 Spark question

[shiloh]

Need help on repair.

This motor has no spark on one cylinder only, but only after running boat for 10 -15 minutes. Runs good until engine/elec system heats up.

All plugs wires and the one coil on the cylinder not getting fire relaced with new parts.

Getting good fire to all other cylinders.

Top cylinder on left (looking forward from back) if that makes a difference

Any ideas other than power pack

[WildeOne]

Probably is the powerpack. Take cold motor, heat PP with a hairdryer, then run and see if cylinder is gone. If so, replace PP.

[fixit]

It's the power pack, No big deal, Very common problem with that engine, Had one for 5 years.... Happens often, Good engine as it is EASY to work on......

[steve waters]

I replied on the other board, check your b-mail, it sounds like a power pack. Swap the port pack with the Starboard pack and see if the misfire swaps sides, if it does it's the pack, replace it and go fishing, if not B-mail me and I will try to assist you further.