WayneOrwig
GT Reference
Was adjusting the valve clearances the other day as they were all slightly large... Bike has now covered about 22,000mi, sometimes noisier than other times, but still running!
Bit of an obvious newby question - the bolt that is tightened to close the valve clearances: surely that will only ever be able to be turned so many times. i.e has a certain lifespan of x number of valve clearance checks (assuming they always need closing)
The reason I ask is that one of the RH valves was pretty much at short limit of the screw, that is to say the thread is just about all the way to the top of the locking-nut
Sounds like you have a tappet gone.
The adjuster screws don't have a limit of turns. But they can be damaged if over tightened