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blueboy5000 · 10-11-2013, 08:14 AM

You have a LARGE air leak (vacuum leak). Proper carb setting is 2-1/4 to 2-1/2 Turns out from seat.

Using a spray bottle of water, start bike and then spray around the intake manifold and vacuum hoses and listen for DECREASED rpms. When the rpms decrease, you've found you leak.

Also, make sure your DIAPHRAGM in the carb is seated properly, and sealed and free of rips in the membrane.

10-11-2013, 08:14 AM	#2
blueboy5000 Join Date: Jul 2011 Location: Connecticut Posts: 493	You have a LARGE air leak (vacuum leak). Proper carb setting is 2-1/4 to 2-1/2 Turns out from seat. Using a spray bottle of water, start bike and then spray around the intake manifold and vacuum hoses and listen for DECREASED rpms. When the rpms decrease, you've found you leak. Also, make sure your DIAPHRAGM in the carb is seated properly, and sealed and free of rips in the membrane. __________________ 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.
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