I have an 02 blaster that got bored 50 over last month and when it starts up you can hear a knocking noise. the oil injector is taken off and I mixed the gas 32:1. When I ride it around for a little bit and then check the spark plug it is whitish like it isn't getting enough oil. So then i mixed it to 20:1 and its still the same. And its blowing alot of smoke out with the 20:1 mix so it should be getting plenty of oil. Is it normal for the spark plug to be whitish like this?