Comments on: Motor scooter engine trouble?

By: George

George — Thu, 18 Feb 2010 15:33:20 +0000

Any suggestions as to a supplier for a Tank 150 (TK150T-9)voltage regulator? Numbers on the regulator are “21254A and 200508″

By: steve cain

steve cain — Wed, 30 Dec 2009 17:35:48 +0000

it sounds like your cdi module may be over heating have that checked

By: Gort

Gort — Tue, 30 Dec 2008 20:04:25 +0000

Check intake and exhaust valve lash on a cold engine. Insufficient clearance may be causing improper valve seating and loss of compression.

Sometimes hard to detect, but also check carb to head manifold for cracks and suction leaks . . which would cause a too lean running condition.

By: gdwrnch40

gdwrnch40 — Sun, 28 Dec 2008 01:20:41 +0000

Try rejetting the carb to a bigger jet.Is the air filter clean?Are you at a higher altitude?Is the exhaust stock?The plug could be a step or two in the hot range.Check the float adjustment to make sure the bowl is full.