classic motorcycle forum
Motorcycle Discussions => British Bikes => Topic started by: kembo on June 22, 2005, 11:51:39 PM
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Call me stupid but work this one out. I know I will in the end but.........
The throttle valve (slide) is sticking i.e. full throttle and then it wont drop back down.
Get this if I put the valve in upside down it doesnt stick at all. Nice fit and slides easy.
I have started to file what I think are high spots.
Any suggestions as to why it goes in easy upside down and sticks the correct way? Bugger and here is the summer!
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I had the same thing - on both sides. They were new carbs plus I've got insulators between the carbs & head & correct 'o' washer. Took carbs off to file down manifold (no bowing). I 'solvo'd' them on a couple of high spots. It still happens now & again, though. No idea why your works upsidedown. As you say "bless 'em".
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I cannot say for certain if this is your problem, but I helped a friend out with the Amal concentric on his BSA, suffering from a sticking slide. The cause of the problem was that the body was slightly distorted from a "professional" who prevously worked on it overtightened the flange mounting bolts. I successfully squeezed the distortion back out gently with a vise, but this can be a risky thing to do. My concern about filing "high" spots is it accelerating the wear. Good luck!