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Azhule · 01-17-2017, 09:03 PM

Usually "Popping/Backfire on deceleration" means : Pilot jet too small or Mixture Screw is off (usually a bit lean)... might need to check valve clearances too

Also... according to "Mikuni"... "some heavily modified bikes (free flowing exhaust) will always have some kind of backfire/popping on deceleration"...

You might try 1 1/2 to 1 3/4 turns or more on the mixture screw... make sure you go no more than 3 turns out... go to a bigger pilot jet if you go 3+ turns out

01-17-2017, 09:03 PM	#3
Azhule Join Date: Dec 2015 Location: CO Posts: 1,525	Usually "Popping/Backfire on deceleration" means : Pilot jet too small or Mixture Screw is off (usually a bit lean)... might need to check valve clearances too Also... according to "Mikuni"... "some heavily modified bikes (free flowing exhaust) will always have some kind of backfire/popping on deceleration"... You might try 1 1/2 to 1 3/4 turns or more on the mixture screw... make sure you go no more than 3 turns out... go to a bigger pilot jet if you go 3+ turns out __________________ "Think as you like... but this self proclaimed Professor is always right" - Buckshot "You never know what someone is hiding beneath their smile..." - NinjaTom - R.I.P.
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