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Old 03-15-2009, 03:41 PM
mechanickid's Avatar
mechanickid mechanickid is offline
Motorized Bicycle Elite Member
Join Date: Aug 2008
Location: nh
Posts: 419
Exclamation clankity rattling sound? please read

im having lots of trouble with my engine, and i have another thread, but its not getting looked at

when running my engine (66cc china) it has a violent rattling sound, but its not the piston hitting the head. i have some scratches in my bore from a few metal shavings getting in, but the scratches dont seem to slow the piston down when im pushing it with the spark plug off, only at bottom dead center does it hesitate if im pushing it very slowly.

i have good compression it seems, its been hard to move the engine since i just took the top gasket off, but that didn't change the performance.
its only too fast if you cant stay on!
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