Frupper
Just got it firing!
Hi folks I have strange issues with my bike. When I riding for longer time there is throttle position around 50% where engine pings. Bike has only 2000 miles and I noiticed that right after break in(when I started to use more throttle). During very hot days engine pings like crazy - unable to ride it. Previously I thought that is because of aftermarket exhaust (Mistral Shorty) but not it is same with OEM.
facts:
- sound like small stones in metal sheet pipe
- runs fine in lower throttle
- runs fine in full throtle
- most severe pinging - 5th,6th gear small uphill
- seems to be independent to RPM just throttle possitions
- sparplugs changed - no difference, colour dark grey electrode, white insulator.
- premium hi-octane fuel - improvement, but not elimination
- cold runs fine
- checked for vacuum leaks with carburator cleaner - nothing
- no vacuum in gas tank, but possitive pressure (it is mistery to me how pressure is generated?!)
- reset of ECU (via diag + fuse out for 1hour) - maybe temporary improvement but not sure
- only supect thing on all bike is that lower screw on TB is dirty from oil
Bike is under warranty but it is quite hard to coorninate hot weather with dealer`s schedule to show symptoms clearly.
So guys any ideas?
facts:
- sound like small stones in metal sheet pipe
- runs fine in lower throttle
- runs fine in full throtle
- most severe pinging - 5th,6th gear small uphill
- seems to be independent to RPM just throttle possitions
- sparplugs changed - no difference, colour dark grey electrode, white insulator.
- premium hi-octane fuel - improvement, but not elimination
- cold runs fine
- checked for vacuum leaks with carburator cleaner - nothing
- no vacuum in gas tank, but possitive pressure (it is mistery to me how pressure is generated?!)
- reset of ECU (via diag + fuse out for 1hour) - maybe temporary improvement but not sure
- only supect thing on all bike is that lower screw on TB is dirty from oil
Bike is under warranty but it is quite hard to coorninate hot weather with dealer`s schedule to show symptoms clearly.
So guys any ideas?