Help! 17 axys fouling pto side spark plug.

[Vortectoy]

I have a 2017 Polaris rmk pro 800 and it keeps fouling only the clutch side spark plug. Only mods are bikeman billet cooling head and ggb can. Maybe get 10-15 miles a plug. Plugs look rich when pulled. Seems to only foul from low rpm like right when it starts. Just had injectors checked and they are 100% fine. What else can it be? Check oil use and it’s right where it should be. any help is greatly appreciated.

 

[adam5187]

I just picked up a 2019 800 and one 45 mile ride and went through 4 plugs. 3 on the clutch side and 1 on mag.

 

[Sheetmetalfab]

I have a 2017 Polaris rmk pro 800 and it keeps fouling only the clutch side spark plug. Only mods are bikeman billet cooling head and ggb can. Maybe get 10-15 miles a plug. Plugs look rich when pulled. Seems to only foul from low rpm like right when it starts. Just had injectors checked and they are 100% fine. What else can it be? Check oil use and it’s right where it should be. any help is greatly appreciated.

How many miles on the sled?

 

[sumtinwong]

how is the wire and cap? check the ex valve.. after compression theirs only a few components that run independent to a specific side

 

[kiliki]

reeds?

 

[TRS]

how is the wire and cap

^^^^^^^^^^^^

 

[Vortectoy]

Bikeman tells me it’s because of their head and the fact that in runs too cold. Around 93-95 engine temp. They advised me to run a different spark plug. Can’t remember which one right now. They also were supposed to send me a revised thermostat for their billet head and I never got it. I guess all this will be revisited here in the next month or so. I have not checked reeds .