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Old 05-02-2009, 10:02 AM
Bikeguy Joe Bikeguy Joe is offline
Godfather of Motorized Bicycles
Join Date: Jan 2008
Location: up north now
Posts: 11,531
Default Re: exahust problems

I have never seen a two stroke blowing BLACK smoke.

The best indicator is to pull the spark plug and look at the color. It should be brown to black, with a little oil on it. White or light grey is bad.

Now back to the exhaust....I have had a couple of pipes where the outlet hole looked o.k., but when I removed the cap, the weld had actually closed the hole to around the size of a pencil! Pop the cap off and have a look at the hole from the inside.

I "adjusted" mine with a dremel tool.

Last edited by Bikeguy Joe; 05-02-2009 at 10:05 AM.
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