I've been reading your posts and a couple ideas have come to mind... if the 
bike was full of oil last time you checked it, and it ran a bit, and if the 
piston rings are bad, its possible that your burning oil, which could be 
why the mechanic said it was 'out' of oil.  A compression check "kit" is 
basically a fitting that screws into where your spark plug normally goes 
attached to a vacuum line w/ a pressure gauge (preferably the kind that 
have a reading that sticks) on the other end.  To get the gauge to read 
compression you have to crank over (not start) the motor.  this can be done 
w/ the starter or by turning the crank if you have access..  hope that 
helps a bit.  The mechanic saying that the there is low compression on #3 
might be an indication of bad rings?   I'm no mechanic, but I have had some 
experience.. my next mechanical project is a complete rebuild of a small 
block international v8... I'm projecting a couple of weeks for that 
project... hopefully if you have to rebuild the engine in your bike it 
doesn't take near as long!

On Sunday, March 4, 2012 9:41:15 PM UTC-5, stefano wrote:
>
> Tinkrmann,
> Thank you for the information. 
> What is the best way to do a compression check? Is there a kit that you 
> can buy somewhere? Also, are valves generally hard to replace? 
>
> Stefano
>

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