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Message: <blockquote data-quote="npk1977" data-source="post: 55966">Ok,I just installed my Chinese 48cc motor.  The motor starts + runs when I pedal, but is severely underpowered.  I get no real pickup.Now, when I disengage the clutch, if the choke is open (down), the motor dies immediately.  If the choke is closed (up), the engine idles just fine (after messing around with the idle screw.)[edit]Just to be clear.  Here are some scenarios:1) Compression start engine, choke is closed (up)2) disengage clutch, motor runs fine.3) Open up the choke, engine revs up, down, and then dies, all in 3 to 4 seconds.Or2) Disengage clutch, motor runs fine.3) Open up the throttle, engine dies in 3 to 4 seconds.[/edit]Any ideas?nps - is there a good throttle twist grip on the market somewhere?</blockquote>