need advice on pz19 jettign for Icebear champion

rlawlgnskite · 06-02-2021, 09:50 PM

After trying LOTs of carburetors (vm22, nibbi, pz22) on Icebear champion with 125cc loncin engine, I returned to pz19. some of them were too big or too tough to get it runnig right.
now with pz19 it starts and runs okay.
I live in denver colorado which is about 5300~5500ft elevation.
currently 80 main jet
I checked the sparkplug today and it was like this.

the bike bogs at 1/4 throttle so Ill try to raise needle one step.(am I right?)

I want to get the most out of this engine so please give me any idea about jetting!

06-02-2021, 09:50 PM	#1
rlawlgnskite Join Date: Dec 2020 Posts: 3	need advice on pz19 jettign for Icebear champion After trying LOTs of carburetors (vm22, nibbi, pz22) on Icebear champion with 125cc loncin engine, I returned to pz19. some of them were too big or too tough to get it runnig right. now with pz19 it starts and runs okay. I live in denver colorado which is about 5300~5500ft elevation. currently 80 main jet I checked the sparkplug today and it was like this. the bike bogs at 1/4 throttle so Ill try to raise needle one step.(am I right?) I want to get the most out of this engine so please give me any idea about jetting!
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