04-05-2010, 01:11 PM | #1 |
Not Yet Wild
Join Date: Feb 2010
Posts: 21
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Smoke, backfire
97 DS gas CC, Kawasaki FE 290
Compression 180 psi Installed new stock carb Idle screw 1 1/2 turns from lightly seated position. Installed new fuel lines Changed oil, 5W-30 Pennzoil (one and a third, didn't change oil filter) Using 94 Octane Gasoline Installed power spring, helix, slides in driven clutch Rev limiter deactivated Had the zip ties on the governor, but cut them off. Problems - 1. There is a great deal of white smoke coming out of the exhaust. 2. It still backfires on occassion. Any suggestions? |
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04-08-2010, 02:06 PM | #2 |
Not Yet Wild
Join Date: Feb 2010
Posts: 21
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Re: Smoke, backfire
3 days with no response, so let's try this. I'll decrease the amount of oil, and see if it stops smoking. With regards to the carb, it is brand new, so it must be the spring holding the butterfly valve or some sort of timing/micro switch problem.
Can somebody tell me how to find, adjust, or buy a new micro switch for the carb? |
04-11-2010, 08:53 PM | #3 |
Not Yet Wild
Join Date: Feb 2010
Posts: 21
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Re: Smoke, backfire
Ok, I guess nobody has any suggestions. For those in the future, there are 3 things that could keep the butterfly valve from closing.
1. Clogged (inside the carb) 2. Screw that touches the butterfly bracket (not the idle screw). This is adjustable, so unscrew it until the valve fully closes. 3. Spring that keeps tension on the butterfly bracket/valve. I think I fixed my back fire problem by unscrewing #2 and putting a zip tie on #3 to create more tension. |
04-11-2010, 10:38 PM | #4 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,406
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Re: Smoke, backfire
You may have too much oil. change the filter add no oil. ...
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