Jetting/ spark plug colours

On that picture the colours described are when i put an 80 main jet in, from 72 because of open filter

The two top parts are now a tanned brown at 78

 

Thank you for asking that question because i think my bike is spluttering at low revs cos my main jet is to high because if you have that setup and with an airfilter you jet is 80 lol mine is 82 without an airfilter but setups are pretty much the same

 

if the spark plug is to dark your running to lean

 

:msn1:

is the spark plug is dark(black) is running rich.
if it is like a rerally white colour is lean.

it wants to be a chocloatly brown.

 

ty for that, but i meant which part of the plug ?

 

it will be pretty much all of it. and dont let it idle then check :rofl:

to do main jet need to go on a decent full throtle run.
find a decent long road or an hill or something go down it full throttle then pull over whip it out and check.

carefull will be warm :rofl:

 

transmission such as what?

 

:_)

such as rollers, clutch springs, contra spring i have the same problem but my one happens for bout a 5 min ride and den its all back to normal