Thanks fellas for the swag of replies. Just to clarify some suggestions and my earlier report:
1. Engine just runs above idling speed at WOT (wide open throttle)... it will not rev out!
2. Cable adjustment is good - i have verified cam operation from full closed position to WOT position.
3. The spider (lifter) sits in three (3) groves in the carby body and rises and falls nicely as the cam rotates.
4. The carby has the idle adjustment knurled nut on the back cover but it does nothing.
5. The main jet screw does not have the inner ring machined in it so I'm sure its the correct one for the 160 cc engine.
It actually appears to me that the poppett valve is not falling enough to supply sufficient fuel to the engine and I'm reasonably sure its not flooding. Additionally, I don't understand the lettering on the bottom of the poppett - Can any one tell me the significance of the lettering? It appears to me that the poppett is symetrical so it's final resting installed position should be irrelevent????
How can I tell if the carby body is type LM or G4?.... But I'm resonably sure that the internals are a mixture of both and this is where the problem lies..... Maybe the poppett ..??
But really, its got me suffed why the engine does not rev out???
- BUMPS
