Problem Found by Bullhead KTM AZ.
Okay , so I had posted up that the Boston Boys had found a ton of problems , but alas it wasn’t THE problem.
What the Boston Boys found was bad gas , bad spark plugs , a highly modified and cut out air box , electrical wiring with tape on it , etc etc.
This means that the shop that was supposed to do a basic tune up didn’t even do that.
And remember that Mach one only found that an injector hadn’t been hooked up.
My original mechanic , DirtYD and a lot of Barfers had it right by saying start with the basics. Yet I tried and just relied upon that a tune up was done amd valves were checked.
The whole problem came down to a sticky valve.
But with some serious consequences that caused it to shut down completely til the Boston guys dug in.
But they only got so far. Got it to restart but it sounded like total crap. Wouldn’t take throttle. My jet ski mechanic then turned to a KTM specialist.
KTM found that the Roller rocker on the intake rocker arm had seized up and disintegrated into the engine , taking with it bearing needles and valve shims.
Fortunately there are multiple screens that prevent the parts from actually going into the engine itself and also the KTM must have a shut down safeguard in that kind of catastrophe which would not allow it to restart at all.
DirtyD said from the get go that this bike sounded more ticky than usual.
My Arizona mechanic said this bike was ridden hard and put away wet way too many times. But Bullhead is confident that they have the fix.
So whoever guessed sticky valve basically got it right.