[BennyB]

I had my bike MOT'd today and the mechanic said my CO2 levels were high on the emissions test. They were 7.8 when he would expect 3.5ish. He said this was down to my bike running rich. My spark plugs are a little sooty but i wasnt bothered about it. I suspect a past owner has had an aftermarket exhaust on the bike &must have rejetted to suit. Then when the bike was put back to standard the carbs were'nt. Do you guys think fitting a high flo air filter will sort this out or should i rejet my carbs? Am i right in thinking it would just be the main jets that were changed?

 

[BennyB]

Thanks Aduro, i will do that then. Although i was afraid that would be the answer! Iv only stripped carbs from single cylinder bikes so this will be a learning experience. All good fun though im sure. What should the standard jet size and pilot screw settings be? It was the mechanic at the MOT place that advised me to get the hi flo filter! I will just get a standard filter then as my current one is pretty dirty.

 

[BennyB]

Iv just found your post about setting pilot screws so will use that info, thanks again.