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Old 08-23-2011, 09:17 PM
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GearNut GearNut is offline
Motorized Bicycle Elite Member
Join Date: Aug 2009
Location: San Diego, Kaliforgnia
Posts: 5,106
Default Re: can not start the engine.

Check it for air leaks. pressurize the whole engine to about 3 PSI through the intake port or spark plug hole and spray the whole thing down with Windex or Mr. Bubbles.

3PSI max or you risk popping the crankshaft seals out. Easy enough to reinstall, but why make more work for yourself.

Here's a video of it being done:
Leak Down Test For 2-Stroke Engines.avi - YouTube

The guy in the video says 9 PSI, but I would not recommend going above 5 with these Chinese engines.
"It's a chinagirl. It's a sometimes fun little engine that often will break your heart. It's disposable.

Does not come with a fortune cookie."

Last edited by GearNut; 08-23-2011 at 09:21 PM.
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