KymcoForum.com

Scooters - 50cc => Like 50 2T => Topic started by: 245luigi on November 18, 2013, 10:09:22 PM

Title: How much "gunk" should be coming out of my exhaust?
Post by: 245luigi on November 18, 2013, 10:09:22 PM

After about 400 km (248 mi) this is what my exhaust looks like:
http://imgur.com/DF816Sb (http://imgur.com/DF816Sb)

Is this normal?? Im referring to the residue that has come out of it and deposited on the expansion chamber

Title: Re: How much "gunk" should be coming out of my exhaust?
Post by: Vivo on November 19, 2013, 01:42:06 AM

Depends on several factors... combustion temperature, oil/fuel mix ratio, jetting, spark plug...

Title: Re: How much "gunk" should be coming out of my exhaust?
Post by: 245luigi on November 19, 2013, 03:24:02 PM

Seem like something I should do more research in then. Anybody know of any resources?

FYI Im on stock br8hsa plug, stock oil mix (meaning I havent played with the pump settings at all), 88MJ and no idea as to my combustion temps

Title: Re: How much "gunk" should be coming out of my exhaust?
Post by: Vivo on November 20, 2013, 01:48:28 AM

Factory/stock fuel mix is ok... you need the lubrication... the idea is to burn all the oil in the combustion chamber so no oil goes out the pipe...