Best Spark Plug for 72 Johnson 125HP

[LOSTBOATER72]

HELP!

I current am using Champion L77JC4 plugs in my engine and I seem to be having an overheating issue. Spray comes from the correct areas but it overheats quite quickly. I have used Splitfire SF263D plugs in the past but that was when I had another issue of a broken piston ring and that has since been replaced. Any suggestions as to the best plug for this motor.

Thank you,
Lost Boater 72

[tashasdaddy]

QL77JC4 or L77JC4 gapped at .030. overheated could be failing thermostat or stats. just because you have water circulation does not mean the tstats are opening and cooling the block.

[kenmyfam]

Champion plugs without a doubt. Have you checked the head temperature accurately ??? if not how do you know it is overheating ??
Is it a spray or a stream of water coming out ??
When was the water pump last serviced ???
Stat's as already stated as well need to be checked and replaced if necessary.