MnSpring
Serious Thumper
Online
Younger than most people my age.
Posts: 9335
Minn
Gender:
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Rather new at this ICE in the ls650/S40.
I also had the, 'backfire'. Riding was little problem, could be controlled. It was Shut Down. (Especially under the overhang at the bank drive through. And the P.O, and Cafe)
Understood the rapid, 'shut down' (riding) and the, 'big single' vacuum. Dealt with that. But the, 'shut down', "BANG".
I Believe it was, air. Found the header bolts were loose. And the clamp, (header to factory muffler), also loose. Did some stuff, and reduced the, "BANG" to a 'poof'. And if I let it idle, for about 20-30 sec, no 'poof'.
So perhaps try, 'air', leaking into the exhaust system somewhere ? (The thing I have to constantly fiddle with is that, 'clamp', muffler over header)
So now, when the, 'Bang' comes back, a little maintenance, and it is gone again. But in the meantime, (when I want it quiet), It's, as others have said, Brakes, Gear, slowly let out clutch. Or, pull the choke, then shut off. Although it probably doesn't hurt, (just like giving a dog a treat when not training, it makes, You, feel good). I don't like putting the wash of extra gas, on top of the piston.
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