02 wr426 backfire?

Yesterday I took my bike out for the first ride and I noticed it has quite a bit if backfire especially when I left off the throttle my buddy said he thinks the Jets arnt adjustabed, would that be the cause?

Tha'ts not a back fire (through the carb) thats decelleration lean popping

 

Replace your pilot jet with a brand new one

Inspect your hot start for leaks

Inspect the boots for leaks

Inspect he header crush washer and junction for leaks

Tha'ts not a back fire (through the carb) thats decelleration lean popping

Replace your pilot jet with a brand new one

Inspect your hot start for leaks

Inspect the boots for leaks

Inspect he header crush washer and junction for leaks

will a manual explain how to replace a jet? And probably a stupid stupid but where am I lookin to find the boots and header crush washer, havint had this bike for long

will a manual explain how to replace a jet? And probably a stupid stupid but where am I lookin to find the boots and header crush washer, havint had this bike for long

 

All very basic stuff.

It would take me hours here to explain everything in detail, or, you could get the service manual (not the owners manual) and read it.

There are sections for maintence, service, jetting, etc.

Lot's of youtube videos too, just search generically or specifically for the bike or task.

 

You can get the service manual for free from yamaha's website.

All very basic stuff.

It would take me hours here to explain everything in detail, or, you could get the service manual (not the owners manual) and read it.

There are sections for maintence, service, jetting, etc.

Lot's of youtube videos too, just search generically or specifically for the bike or task.

 

You can get the service manual for free from yamaha's website.

well i just picked this jet up in a size 42 just waiting on it now https://www.rockymountainatvmc.com/p/2896/24375/Pro-X-N424-21-Series-Keihin-Pilot-Jet-?v=2860

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now