Well, yeah, it starts to look like that after such a long discussion.
And your topic says "can the cam chain slack produce failures?", and my answer would be very short: YES! If there's slack where it is not supposed to be it not only can, but it will produce failures, and major ones, at some point. So if you do something, do it once, and do it right, or you will have to do it again.
Read your reply once again... Does that make any sense to you?
Originally Posted by rich7
when I close the petcock valve it does not do stall. So it is not an electric problem.
Sounds to me more like "when I clap my hands my bike doesn't stall, so it is not an electric problem". How does clapping hands and bike's electricity could be related? (unless there's clapping sensors, but let's not go that deep...)
And more "it does not do stall"... So does it stall "does do stall" (grammatically incorrect but my grammar isn't perfect too), or it doesn't stall "it does not stall"???
And yeah, if I close the petcock on my bike it won't run very long too... It needs petrol to run.
I'm not trying to be harsh, I'm trying to understand what you want to say...