Jump to content
Sign in to follow this  

2007 CRF250R

Recommended Posts

I recently bought a 2007 crf250r and it runs great other then when I let off the throttle it backfires very excessively. I don't know if this is normal or if there is a problem. (It had dual pipes by the way) Thanks.

Share this post


Link to post
Share on other sites

Verify your pilot jet is the right size and make sure you dont have a leak in the exhaust either at the head or where the header ends and the y pipe starts to the mufflers.

Share this post


Link to post
Share on other sites

Sounds like lean pop, caused by an exhaust leak or a lean pilot circuit. To richen the pilot circuit open the fuel scew 1/4 turn and retest.

Edited by nzgsr

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

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

Reply with:

Sign in to follow this  

×
×
  • Create New...