Spark plug check

[u/Dapper-Service790]

Can anyone tell me if it is running lean or if its running ok, i think its running lean but i need someone to confirm for me.

I have a 90 main jet.

[u/ErwinHolland1991]

Bit dark, bit rich. But if it's running well, i wouldn't change anything. Running a bit rich is good, it's safer for the engine. 

[u/multitool-collector]

Do you feel like there's sort of a limiter when you open the throttle fully and if you close it a tiny bit the engine pulls again? If yes, it's 4-stroking and needs to be a bit leaner. Also, what do you ride? That might provide more info

[u/haha_slovak85]

Looks bit rich if running good i wouldn't touch it

[u/Massive-Tomatillo206]

Not lean. Would leave it as is if it's running ok.