REPLACING SPARK PLUGS

[MIKESPOLARA]

Figured on replacing spark plugs in max clone engine. Plugs I removed are Champion RJ14YC. All the books say should be RJ12YC. The 14 is hotter then the 12. Think I should go to the RJ12YC? And since I have no radio going to a non resistor is OK?

 

[BLK 68 R/T]

If they looked just fine when you pulled them I’d stay with what you have.