More flame on decel will deter tailgaters! Shame to be wasting fuel though.

 

Dumb question. 138 main will run richer than a 132? I think yes but you guys will tell me
Cheers
Patto

 

Correct, the higher the number the fatter.

 

BP does it by the millions of gallons. No harm done just go golfing.

 

cam timing overlap will cause that.
Lots of very fast race motors will flame on decel because of cam timing.
don't overlook that while you search.

 

So I have put in a 125 main just to see what that did. Its now stalling after a couple of minutes. I have checked fuel flow - TICK
I opened the drain plug and fuel came out - TICK so I guess I check float height next.
The Plug was as dry as a nuns .... and light brown.
As I turned the throttle it would die as well.
Kouba needle is 2 1/2 turns out and pilot is 38
Any advice

 

oh and needle is on the third notch from top(blunt) end
And I have spark obviously

 

You should probably consider if you have a worn/stretched timing chain, or a tensioner that either failed or is stuck (partly failed) and I'd go back to the jet that lets it run. You've checked a lot of other things, and if the bike was running so crazy rich, I think you would have wanted to fix it because it ran crappy previously.

Given that you said you have trouble starting, and that it's only throwing flame on decel... when you're first starting, there's not much operating tension on the cam chain and if it can, it will flop around and vary your valve timing, and make it more difficult to start your bike, when you're decelerating the same thing can happen because the bikes momentum is pushing the crank around rather than the compression from rapid piston explosions pushing. I'd check your chain for slack and pull your tensioner and see if it is either stuck, or extended real far out. If it's barely extended you might try pushing it a few clicks and see if that helps, if it's far out time for a chain obviously. My friend in High School had a 4 cylinder Toyota with a worn chain, it would actually run fine(ish) once he got it started, but would be a bear to start sometimes and just crank and crank and crank, replaced the chain, problem solved. (but it was still a POS 4cyl 2wd truck )

 

spark arrest gone?