new motor having problem

[burnfuel]

i have a 2001 banshee that a stock crank is has a coolhead with 22cc domes plus 66mm piston with a timing plate that iam running 4degrees postive the carbs been ajusted to the sight glass on side of carbs and the needle are set in the third clip from the bottom it also has 270 main jets it runs fine for about 20 min and then it acts like it drop a cyl then it comeback on and runs fine again notice one pipe is hotter than other i also cut the end of coil wires and refit it to the spark boots to make good contact it runs good on the big end and the bottom end also the pick-up is set at 0.20 thous timing plate is line up at 4 degrees mark on were case splits gas mix 32 to 1 plugs are gray i dont under stand the motor has about 40 min running time because i dont what to ride and something happen to the motor so if have answers please post thanks for reading

[firebanshee]

i have a 2001 banshee that a stock crank is has a coolhead with 22cc domes plus 66mm piston with a timing plate that iam running 4degrees postive the carbs been ajusted to the sight glass on side of carbs and the needle are set in the third clip from the bottom it also has 270 main jets it runs fine for about 20 min and then it acts like it drop a cyl then it comeback on and runs fine again notice one pipe is hotter than other i also cut the end of coil wires and refit it to the spark boots to make good contact it runs good on the big end and the bottom end also the pick-up is set at 0.20 thous timing plate is line up at 4 degrees mark on were case splits gas mix 32 to 1 plugs are gray i dont under stand the motor has about 40 min running time because i dont what to ride and something happen to the motor so if have answers please post thanks for reading

You could need new plug boots, they have an internal resistor in them that fail. Replace them with NGK ones for about 6$ a piece. You can ohm them out and see if they are bad, put one lead were the spark plug goes and the other lead were the wire goes. I think they have a 5mega ohm resistor in them, check the spec on the spec page.

[J-Madd]

i have a 2001 banshee that a stock crank is has a coolhead with 22cc domes plus 66mm piston with a timing plate that iam running 4degrees postive the carbs been ajusted to the sight glass on side of carbs and the needle are set in the third clip from the bottom it also has 270 main jets it runs fine for about 20 min and then it acts like it drop a cyl then it comeback on and runs fine again notice one pipe is hotter than other i also cut the end of coil wires and refit it to the spark boots to make good contact it runs good on the big end and the bottom end also the pick-up is set at 0.20 thous timing plate is line up at 4 degrees mark on were case splits gas mix 32 to 1 plugs are gray i dont under stand the motor has about 40 min running time because i dont what to ride and something happen to the motor so if have answers please post thanks for reading

 

 

I have a headache from reading that . j/k

 

I always sync the carbs by looking into the carb body. Not sure how reliable that window is You may want to take a look.

[burnfuel]

You could need new plug boots, they have an internal resistor in them that fail. Replace them with NGK ones for about 6$ a piece. You can ohm them out and see if they are bad, put one lead were the spark plug goes and the other lead were the wire goes. I think they have a 5mega ohm resistor in them, check the spec on the spec page.

hey thanks for information but i found what was wrong last night the i took the airbox lid off and seen that the left carb slide was not open the same time as the right side because the left throttle cable was stretch so i replace throttle cables now it screams plus that why it would act funny on the bottom end but when both carbs slides got to the of carbs it was fine