I have a 2001 Kawi 125 eliminator that I've been trying to get running. It has Fuel and spark but won't start. i checked the timing and the timing is right. The only thing that was out of spec is the compression (90 psi) I think the spec is 130-160 on that motor. But shouldn't it start with 90 psi?

 

That is a large psi difference in compression numbers. The plug is prolly fouled now. But 90psi is a sign that this engine is in need of help. Or your spark plug is loose.

 

There is no sign of combustion. BTW you gotta take out the spark plug to do a compression test. My question is...Is 90 psi of compression enough to ignite the air fuel mixture on a one-cylinder 4 stroke engine? Moto Guros please help!

 

90 psi should be enuff.....I've had some ol bikes start with less. lol

If you shoot a lil oil in the cylinder, is it same compression? do you have low compression because of rings or valves?

 

WET TEST FTW BR!!! HAHHHAHAHHA

welcome to KF man.. do a wet test.. if you're not sure what that is, post up.. we'll walk ya tru. REAL easy too.

good luck!