Originally Posted by
jboquire
P5 with 9901/41021. What could be causing this issue, it happened to me three times during a 30 min. main event. Brand new plug, temps at around 225 deg consistently. a local racer told me it could be that the motor is too rich on the low speed needle, he is knowledgeable but I want to make sure before I start messing with it. He also recomended to use a C5 plug instead of the C6.
Thanks in advance, jb
Nova motors in general don't like an overly rich LSN. Also the C5 is a hotter plug so if you are running a little rich it could be the fact that your flooding the plug with the C6. My buddy had a similar issue over the weekend, changed to a C5 plug and after a quick retune all things were better.