Take a look at my spark plug


New Member
Jul 20, 2008
Salisbury, MD
I'd like some feed back on my spark plug. The plug is a Champion CJ7Y. I need a low profile plug because of the small space above the engine.

I have just over 100 miles on my Chinese 80cc (or whatever) engine. I'm using 20:1 Castrol 2 cycle oil with regular gas now, first two pints was 16:1.

My sprocket is a 48 tooth on a 24 inch wheel. I'm getting about 20mph at around 4800rpm.

The color looks sort of dusty gray tan if you can tell from the pictures.
Does this look okay at this point or running too hot. I have a colder plug, Bosch WSR6F that I could use. Or should I start using a richer gas mixture.

Many thanks to everyone for all your tips.




New Member
Mar 7, 2008
Bellingham, WA
I think it looks pretty good for the high oil content of your premix. After break in you could go to 30:1 and it will probably be a nice tan color.