Welcome, Guest
Username: Password: Remember me
  • Page:
  • 1
  • 2


KZ440 with KZ400 B2 Engine with hanging idle and backfire problem 17 Nov 2021 16:53 #858016

  • F64
  • F64's Avatar
  • Offline
  • User
  • 81-KZ440D2
  • Posts: 802
  • Thank you received: 221
Do a full throttle run

Then tape up half of your air filter intake to create a richer mixture.
Do another run. Did it pull harder?

Take off the tape then unscrew your air filter and leave a slight opening between your air filter housing and airbox housing.
Do not remove your air filter housing as that would be too much air.
You are creating a leaner mixture.
Do another full throttle run.

Which run was better? normal, lean, or rich?
Make sure your carbs are synced before testing.
Louis Dudzik's GM HEI ignitor conversion installed 2015 s3.amazonaws.com/gpzweb/Ignition/GPZgmHEImod.html
Motogadget m-unit blue installed 2017.

Please Log in or Create an account to join the conversation.

Last edit: by F64.
  • Page:
  • 1
  • 2
Powered by Kunena Forum