hi guys, I'll attach a video. 0 codes. sled ran great monday, parked in garage then went to ride friday and it immediately acted up. Sled is turbo'd and it wont rev out now like past 7600 rpm, it sounds like ANTI-Lag or an rpm limiter-lock. it idles good, runs good, up through the rpm until around that 7k mark then. she won't wind out. At first glance it would seem like exhaust valves or spark issues.
Here is what I've done. Checked exhaust valves and cables, length. They are all free. the servo cycles at idle. I have another 2019 alpha I can swap parts with, I swapped the servo motor, spark plug caps as mine have some age. ecms, no change. I then Disconnected the turbo fuel box, disconnected my air intake pipe and ran it stock, Yes itll be somewhat starving for air but wont rev past 7k even from a dead stab, same issue. I then removed the intake and checked my reeds, scoped out good. With carbs off I rotated engine and cant hear air escaping through them. Removed spark plugs and did a compression test, both cylinders are good at about ~130 psi. (I did top end and reeds 300km ago) I would assume if reed was bad it would give me lower compression numbers too but both even. I can see the exhaust valve servo move and pull them open as its reving out. so unless its stopped 1 stepped position short of full open, they're open.
I swapped plugs out on the mountain and they both had good normal color to them. When I removed the plugs at home in the garage the PTO plug was normal, Mag side is wet and oily.
It fires up and idles good, runs good, just cuts out in that higher rpm,
ignition coil? pick up for the coil?
a fella on facebook said stator but stator makes power and im not having power related issues?? hmm. I'm thumped now.
Here is what I've done. Checked exhaust valves and cables, length. They are all free. the servo cycles at idle. I have another 2019 alpha I can swap parts with, I swapped the servo motor, spark plug caps as mine have some age. ecms, no change. I then Disconnected the turbo fuel box, disconnected my air intake pipe and ran it stock, Yes itll be somewhat starving for air but wont rev past 7k even from a dead stab, same issue. I then removed the intake and checked my reeds, scoped out good. With carbs off I rotated engine and cant hear air escaping through them. Removed spark plugs and did a compression test, both cylinders are good at about ~130 psi. (I did top end and reeds 300km ago) I would assume if reed was bad it would give me lower compression numbers too but both even. I can see the exhaust valve servo move and pull them open as its reving out. so unless its stopped 1 stepped position short of full open, they're open.
I swapped plugs out on the mountain and they both had good normal color to them. When I removed the plugs at home in the garage the PTO plug was normal, Mag side is wet and oily.
It fires up and idles good, runs good, just cuts out in that higher rpm,
ignition coil? pick up for the coil?
a fella on facebook said stator but stator makes power and im not having power related issues?? hmm. I'm thumped now.
