Lifan KPX Throttle Response / possible detonation

[Thumper]

Originally Posted by MotoJane

I picked up my KPX 250 a couple of weeks ago and I'm having the same issues as others with the ping/click during acceleration. I don't hear it at speed or idle just when I'm going through the gears. It can be loud so with a helmet on I have no issue hearing it. I checked the provided manual and this bike has no gulp screw. No adjustment screws at all that I can see on the 2023 KPX 250. Anyone find a solution to this issue? I only have like 50 miles on the bike. I contacted Venom the folks I got the bike from with zero response.

Sounds like classic lean mixture. Good luck. Some folks do OK with it, but others have excessive lean issues.

My "primitive" carbed bikes can't adjust automatically for elevation/temperature. Nothing over 500 feet in evelation within 500 miles of here, but I will be moving. So I will rejet accordingly. You can do that with a carburetor.