Why won’t my engine idle smoothly after a carb rebuild?

If your engine won’t idle smoothly after a carburettor rebuild, there are a few likely culprits:


  • The idle mixture screw isn’t set correctly
  • The pilot jet is still partially blocked
  • The carburettors are out of sync (on multi-carb setups)
  • Air leaks at the intake boots or gaskets


Even after fitting new gaskets and seals, a carb needs fine adjustment. That’s why many riders choose a professional carburettor tuning service — it ensures correct idle mixture, balanced carbs, and smooth low-speed running.


Book a motorcycle carb balancing and tuning service near you for reliable idle every time.

Book a Carb Service or Restoration Today