Reply To: GV125C Tuning frustration
Hello 🙂
I hope you had a nice weekend and you was able to make some free time to make any further diagnosis ?
And also it sounds stupid , but i feel like i need to start here first
– can you make the engine hot for 5 mins idling
– plugs out , both of them
– full throttle open
– put a compression tester in front head
– crank the bike for 5seconds , and see how much PSI the engine makes at full throttle
Then repeat for rear head , report back here.
Please make sure to use only the “metal part” of the compression tester (it is a straight metal bar with a rubber end that needs pushing down hard)
Don’t use a “Flexi Flexi” hose attachment , so to avoid false readings as flexi hoses bulge anyways