Jump to content

Popping while letting off gas

Recommended Posts

Reset the FI by starting the engine COLD with NO THROTTLE and let it idle for THREE MINUTES with NO THROTTLE.

Shut it off and re start.  If that does not do it, you need to clean your injector nozzle.

  • Like 1

Share this post


Link to post
Share on other sites

I'm not too familiar with KX specifically, but pretty much in any situation if it's popping when you let off the gas you have an exhaust leak. It won't harm your motor at all but you may suffer loss of power depending how bad the leak is. Check your header pipe where it meets the motor, you should have a gasket of som kind. For instance My YZ250F has a copper crush gasket. Make sure all is in tact. If so tighten to torque spec. Then check where your header pipe meets your muffler. It Should be a tight fit. You may possibly have a gasket but not all do. If its fairly tight you can use height temp RTV to seal the gap and possibly a pipe clamp. I hope this helps!

  • Like 1

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:


×