backfire

[wal2l2ior]

Im getting just a little backfire every once and awhile on deceleration. Can i fix this problem with my air screw?

 

[87warrior]

yes it sound to me that the bike is a bit on the lean side so u back the piolet air screw out about a quator of a trun and go from there

 

[yamarider]

Backing the fuel screw out should do the trick, but that screw can only add so much fuel before you need a bigger pilot. If the screw doesn't fix the problem you'll have to go a size up on the pilot jet. Once you get it right it'll be easier to get it started when it's cold, which is always a good thing with the warrior's engine that hates starting cold.

 

[idle]

Where is the air screw?

 

[wal2l2ior]

backing it out is richer? i always thought out=lean in=rich hmmm..

BTW..im at 2 1/2 turns out now, with my dyno jet kit. so go 3?

 

[yamarider]

Where is the air screw?

4 stroke carbs don't have air screws, he means the fuel screw

 

[yamarider]

backing it out is richer? i always thought out=lean in=rich hmmm..

BTW..im at 2 1/2 turns out now, with my dyno jet kit. so go 3?

The fuel screw doesn't do much after a certain point, but you can try it. If it doesn't work then you need a bigger pilot jet (unless you have an air/exhaust leak somewhere)

 

[tricky]

Where could you have a leak other than the intake boot? Is there a test to find leaks?