Compression Test

[Way]

Okay, not sure where to go from here. O_o

I don't know how to post the procedure from the manual but anyway, the acceptable range is from 149 to 199 PSI. Limit is given as 114 PSI.

Being as I am quite certain nothing was left in the cylinder, I started the bike up to warm it up. Started right up, no problem at all, valves still pretty loud even after adjusting though not quite as bad as before but still louder than what they had been. Took it out for a spin, about a mile or so.

I threaded the homemade adapter in, unhooked the fuel line, opened the throttle and cranked for a few seconds.... Tester seems quite snug and airtight, no air leaks as far as I could tell... So... drum roll.... are you ready? :hide:

How in hell could it be... 90 PSI ?

:shocked:

I don't get it. I would have heard air escaping from the lines if there was a leak in the testing setup. Such a low reading makes no sense at all though. Would the motor even start? It wasn't hard starting at all, not in the slightest.
No smoke coming out the exhaust, bike took off as normal no power lag. It certainly didn't run like it was anemic in any way.

I couldn't see any kink in the tester hose, again no hissing if air were leaking. I know these motors are very good but if it indeed is running at 90, it sure seems there would be seepage coming from somewhere, like out the exhaust? Any thoughts?