Ive been try to track what i though was a missfire for a while now. Everytime i try something, the bike does something new. Its great
After checking alot of other things, the bike is now doing this :-
Starts fine. Idles fine.
On light throttle (0-25 percent, idle to about 6k) it sounds almost fouled. Simular sound to when they run out of fuel. It wont accelerate, but doesn't die completely either.
Open throttle above that (25-100 percent, idle to 10k) and its a jet. Pulls real well through the mid range towards the top end.
Catch is, it breaks down at 9500-10000rpm. I call it 4-stroking, but basically, it wont pull past 10k and sounds very course.
Once warmed up, it idles fine. Starts first kick no problem. Bliping the throttle is fine up to 6-7k. Didn't try bliping any higher as it was getting late, and raining.
Mods - Std engine. Orange wire splice, GPS splice, Tyga end cans, drilled airbox. Carb jetting - standard.
Any advise on what to check next ? Ive check coils, cleaned ignition pick ups, multiple spark plugs. Pulled the carbs and inspected them. Previously it had the front cylinder cutting in and out, but that seems to have fixed it self. Im starting to think possible crank seals.
_________________
Winning isn't everything, but loosing isn't anything