I think I have a problem with my Super Rok engine valve as the engine doesn’t have so much power as last year. My friend noticed that valve doesn’t go up and down as should be (his idea). He doesn’t know the Vortex Super rok /Rok GP engines, he is more like a Rotax guy, but he told me, that valve works almost the same on every engine among engine manufacturers.
Do you have any manual or tips on what needs to be changed or checked? It looks like that shaft has a tolerance (moving a little bit), so there could be some leak.
First I want to check the carburetor if it’s clean and if every jet is torqued and then look on the reeds, if is not a problem there and then I want to look at that valve.
The engine has not good mid-range as it should be
Every idea will be appreciated.
Is there anyone who own this SuperRok engine? New ROK GP power valve is fully automatic I guess. I am not sure if the inside of that SuperRok exhaust valve is the same as the RokGP exhaust super valve.
New ROK GP valve
Thanks in advance