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We were riding yesterday in the Columbine area of CO. My dad and brother have for all intents and purposes identical 06 M7's with 15:1 Rkt heads. They have run flawlessly for over a year with this setup. Coming back to the parking lot is a 5 mile road which had just been groomed the night previously. They both died like someone had hit the kill switch. Air temp was probably in the 40's. We pulled the plugs on my brothers and the mag side plug electrode was mostly missing - like it broke off right at the bend. His was also pucking coolant. We havn't pulled my dads yet. We always run 91 octane fuel. Elevation at Columbine is about 7500 -8000'. No check engine or temp ligts were lit prior to them stopping.
My initial thoughts are overheating due to lack of loose snow on the trail. That theory has some holes in is because both my dad and brother know enough to occasionally go off the trail into the loose snow.
Those who have had the spark plug electrode break off - is this metal likely to end up in the crankcase? Or is it more likely the gas flow would push it out the exhaust? There are some aluminum spots on the bottom of the plug from the electrode bouncing around in there.
Any thoughts would be greatly appreciated!
My initial thoughts are overheating due to lack of loose snow on the trail. That theory has some holes in is because both my dad and brother know enough to occasionally go off the trail into the loose snow.
Those who have had the spark plug electrode break off - is this metal likely to end up in the crankcase? Or is it more likely the gas flow would push it out the exhaust? There are some aluminum spots on the bottom of the plug from the electrode bouncing around in there.
Any thoughts would be greatly appreciated!
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