Reply To: Valve clearance, camshaft, camshaft tensioner – a problem or a serious fault?
Hello,
Rather than incurring further costs for diagnostics and replacing everything that could be causing this cyclical knocking, I’m letting the problem go.
At most, I’ll have to replace the entire engine (oh well), there is a large selection of engines available at affordable prices, and it’s also easy to import motorcycle parts from abroad.
But after all this fuss and putting the motorcycle back together, I encountered a problem.
The bike starts up fine – the carburettors are synchronised and adjusted – I still need to sort out the issue of air leakage at the airbox – maybe you have some information about the rubber parts that connect the airbox to the carburettors? I would be grateful for any suggestions.
Despite revving up, the motorbike does not reach the same speed as before.
The modifications made during servicing are as follows:
replacement of the front drive sprocket with a 14-tooth one – the entire drive set, DID 428 chain on X-rings, front sprocket and rear sprocket
Carburettor regeneration (if you can call it that), unfortunately I did not take an active part in the carburettor regeneration and I do not know exactly what was put inside.
With these problems, I have some concerns that my friend went all out and replaced everything in my carburettor (in the sense that he replaced all the components with those from a second carburettor purchased from GV125).
I will check carefully today which parts of the carburettor remained after this repair and describe the issue again.
What else could be the reason that the v-max speed is now borderline miraculous to maintain a constant 90 km/h in 5th gear and the motorbike does not have the power to accelerate to 100 km/h?
Previously, despite valve clearances above the norm, the motorbike could easily reach 100 km/h, and could even accelerate to 115 km/h on a straight road.