cybercarl wrote:
+1 on what Lloydie says for me. The only time my 2000 storm has suffered this is when it's not been tuned. Whether that's out off balance or I have been messing with the jetting. I have a feeling that having unbaffled cans helps as well. And maybe the TPS comes into play also.
To say they all do it is just unacceptable to me. There has to be a solution and IMO I think it's down to tuning.
(:-})
Oh, there's a fix right enough, just lengthen and reduce in diameter both inlet tracts so that the mixture can't ignite in the airbox before the valves close.
Or advance the inlet cam timing- same result. It'll be closed before the spark occurs.
Or retard the ignition timing- as before the spark will not occur until after the valves have fully closed.
But you'll lose top end power and gain low end with all of these.
I think it's just because the engine's tuned as standard to be about as aggressive as it can be with this size carbs, and still meet emission standards.
Once people start tuning them, no-one's bothered about emissions, just performance, and so the problem goes away.
But they're certainly worse when the carbs are out of balance.
I'd prefer they don't do it, but it doesn't cause a problem, and so rather than have people worrying about it I advise leaving it alone, with the exception of upping the tickover and getting carbs balanced.
The trouble is: I offer a carb balance service for a few pounds, and so could be accused of exaggerating a problem to make some money.
It's not falling off, it's an upgrade opportunity.
and ive done 600 miles .
no damage, however, that was three months ago and its not coughed or knocked once since :thumbup:how the wombles that works i do not know.
