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racer 557
11-08-2009, 11:56 AM
i was riding because my 04 just had valve work done by my local honda shop it lost power when i was riding then i tried to turn start it and it it should be really tuff it has high compression piston but anyways it still has a hard part when i kick but no power

from your alls knowledge wha caused this

has plenty oil

i need to know asap please i have race this comin weekend

Fast350ex
11-10-2009, 04:31 PM
What kind of piston?
And how many hours?
Is your timing right?

SHIFTx450
11-10-2009, 04:42 PM
valve stuck open?

smw450r
11-11-2009, 02:06 PM
im thinking valve open also