I got 105psi, but the bike temp was about 30ºC when I did the test.Andy wrote:As always, do a compression check. If the rings are not seating correctly (i.e. they're worn), then poor compression will not be helping.
Tried taking the airbox lid off, but there is a rusted screw that just wont come out of the lid. So I went out to the hardware store and bought a drill & screw extraction kit (which wasn't cheap!Andy wrote:Check the slow (pilot) jet/circuit in the right carb. Could be a blocked or partially blocked jet.

So, I drill a hole into this screw, I then slowly wind in the screw extractor with a tap wrench - SNAP! - the new screw extractor snaps inside the drilled hole - sh*t!!

So I try to drill it out again - SNAP! - now the new drill bit has snapped off into the hole... FFFAAAAARRRRRKKKKK!!!!!!!!


I think I will just use the biggest drill bit in that kit and drill right through it!

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Jerry Lai
NSR250 [MC21SP]