I remember reading on here a while back, about how the vacuum under engine braking pulls the carb slide rollers into the body, resulting in the plate that fits onto the engine side of the carb slide touching the carb body, which results in excess pressure being applied to it, and eventually they crack, which if a piece gets sucks into the engine results in serious engine damage (as would be expected)
I'm sure the 'test' to check if carb was worn out, was to apply pressure to the filter side of the carb slide, with it fitted to the carb, and then see if the plate which fits the carb slide is free to float or is clamped against the carb body. If its clamped against the carb body then carb is deemed as in need of replacement.
Have just checked mine
My slide plate does not have any float when pressure is applied to the slide from the filter side
The plate shows signs of rubbing on the carb body (which I don't think its supposed to do) as indicated by the polished areas (black coating has been removed)
The slide itself as appears to be rubbing on the carb body, again indicated by the missing areas of coating
Carb body has tell tale wear marks from the rollers digging into it
Bike has 10K miles and approx 500hrs (450, 08 model)
Is this carb junk?
Edited by GuyGraham, December 29, 2015 - 08:16 AM.