Kymco 500ri no compression in cylinder

[ggraven]

I have tried many test as far as spark' have it, fuel to injector' have it, fuel pump works fine, Has anyone had or heard of this problem, from looking around on the internet this could be a blown head gasket, valve touched the piston. Whats the best way to diagnose this issue, could it be a timing issue. I only have 300.00 bucks in it, I would hate to get rid for what little I have in it.
One last thought could it the starter is not engaging to spin the piston rod? The scooter has backfired on me before!! 
500 RI Fuel injected and 11,000 miles
Is it worn out??

[CROSSBOLT]

How are you concluding it has no compression?

[ggraven]

I got a compression tester from a local auto store and used the 10mm adapter and screwed ii in the spark plug hole.

[CROSSBOLT]

That is the absolute BEST way! So, what reading are you getting?

[scooterfan]

Are you sure the valve clearance gaps are correct ?

[ggraven]

I had zero reading on the compression tester.
I have not checked the valve clearance.

[CROSSBOLT]

Zero? Yes, first like scooterfan suggested, check valve clearances. Then check compression again to see if there is a change.

[Stig / Major Tom]

Why is this a $300 scooter?
What did the previous owner tell you?
He was doing 'what', when 'what', happened?
We need more history of this $300 scooter.
Stig

[ggraven]

Thank you I will do that and see what happens.

[ggraven]

$300 scooter
I bought it from a guy about 60 mies away from me. He had been trying to get it running and was not able to. He bought it from a guy near him and he tried to get it running. I am not sure what he paid for it, so in all I do not know much about it. I figured for 250.00, I could always sell it parts and get my money back, but I am determined to get to the bottom of this scooter and get it running. They are selling for 2500. to 3500 depending on condition. Hopefully the valve clearance will get me on the road.
Thanks

[KymcoRockr]

You're probably going to have to take off the head and cylinder to figure out what's going on.

[ggraven]

Should I not try checking the valve clearance and have a shop do a diagnostics test on it?
They charge 85.00 for that.

[scooterfan]

Should I not try checking the valve clearance and have a shop do a diagnostics test on it?
They charge 85.00 for that.

Yes, the correct valve clearance settings might solve the problem.

[ggraven]

I adjusted the intake side valves, there was no gap i adjusted to the.004 now do i adjust the exhaust at the TDC or do i rotate 180 to the tic of exhaust valve? The exhaust side is very tight no gap even when i loosen the adjusting nut.
I would appreciate some input before I go any further.

[CROSSBOLT]

All valves, intake and exhaust adjusted at the same time, at top dead center on the compression stroke. Usually there is an indication on the cam gear when it is in the proper position. That will be generally be two holes that will be parallel with the valve cover surface. You can confirm the cam is in position by observing the rockers are fully tilted away from the valve stems.