I have problems with diesling when i stop engine ( itwont stop) i drive ngk R 567 i 8 maybe Denso will be better with the heat larger heat spannDenso SK20R11
I started with ngk 7`s and ended up with ngk 5`s , non resister in my 505 ...NGK R5671A-7
Can heat range in the spark plug have any effect on engine knockingDieseling problems are not from spark plugs.
Your engine idle is too high.
Either lower the engine idle or turn the engine off with the car in gear, that will stop dieseling issues.
Dieseling problems are not from spark plugs.
Your engine idle is too high.
Either lower the engine idle or turn the engine off with the car in gear, that will stop dieseling issues.
I sure don't claim to know everything but switching to a colder plug may help.Can heat range in the spark plug have any effect on engine knocking
That plug looks good. Nice clean idle.