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Hey I'm having a hard time getting the jetting set properly on my 03 blaster. I recently just installed a full fmf pipe and a boyesen rad valve. Jumped the jetting up to a 290 with the air box cover on. Air screw 1.5 turns out. The temp was about -5c. I took it out for half an hour or so today...

My blaster is making sort of a ringing/slapping noise and I thought it was a piston slap, but I just did a compression test on it and it reads 135 psi. Does anybody have any idea what this could be? Clutch? Bottom end? I just bought the thing and it runs real good, 1st kick in -10 degrees but...

I just bought a 2002 Blaster last weekend and I'm pretty positive that it has a piston slap. The bike didn't have an exhaust gasket on it, someone said in a similar post to this that that could be the sound, but I put my hand through the exhaust port and pushed the piston and it seemed to...