over heated

dwint51 · 08-10-2015, 08:29 AM

ive been checking my plug all the time and it was very dark.in fact it was so rich I had to wait a long time for it to warm up aqnd lean out.i also put a cap of oil in the tank

blueboy5000 · 08-11-2015, 07:08 AM

You probably didn't need the extra oil in the tank.

Extremely rich can cause overheat, but that takes a long time, and a lot of carbon residue in the cylinder.

I'd guess improperly set rings, or really screwed up carb.

My two Mirranelli bikes max at 12k, and have handle d 10k+ rpms for thousands of miles. I am surprised yours died without being pushed to the upper RPMs

08-11-2015, 07:08 AM	#2
blueboy5000 Join Date: Jul 2011 Location: Connecticut Posts: 493	You probably didn't need the extra oil in the tank. Extremely rich can cause overheat, but that takes a long time, and a lot of carbon residue in the cylinder. I'd guess improperly set rings, or really screwed up carb. My two Mirranelli bikes max at 12k, and have handle d 10k+ rpms for thousands of miles. I am surprised yours died without being pushed to the upper RPMs __________________ 2011 Roketa MC-23-150 4T 150cc 157 qmj 24mm carb w 115 main jet and paper cone air filter Manual petcock w Tygon fuel lines Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust RED spring clutch Adjustable CDI (brand unknown, it's blue and red and works great!) KOSO high performance variator w 12g sliders Gates Powerlink 835-20-30 belt GPS verified 65mph on flats.
	0