Hi all
My CB250RS has recently started having trouble reducing revs when i let go of the throttle - it will stay at whatever it was at for a bit which makes it very hard to ride and shift.
Sometimes (though less often) it revs up slightly by itself, or is generally lurchy - might just be my riding
I slackened the throttle cables slightly, and noticed that the return cable has a lot of slack in it and doesn't appear adjustable. However, the little rotating bit on the carb returns home fine under spring power (yet the revs stay high), so I doubt the cables are at fault.
Obvious answer would be an air leak in the boot between the carb and head, so I'll check that. I've read that people suggest spraying with brake cleaner and see if revs change, is that actually worth doing?
There are some other recent developments that could (?) be related:
The front left rocker cover bolt is stripped and is now jiggling around in its seat. Oil and air bubbles are coming out of the small gap between the rocker cover and head, so could this somehow be causing my revving problem? Is this worth fixing? I presume helicoil it, any tips for that?
Also, there's a bubble stuck under the inline fuel filter, could this be doing something? The bike still pulls fine up hills etc so it gets adequate fuel, so I doubt that this is the issue.
Thanks
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