Re: BlacksmokeBackfire

Posted by Bob Kerr on April 10, 2003 at 09:17:40 from (152.163.189.203):

In Reply to: BlacksmokeBackfire posted by J.Chesher on April 09, 2003 at 15:14:30:

First thing I would check is, the float in the carb! I bet it is either stuck or got a crack in it and sank to the bottom of the fuel bowl. It sounds like it is running so rich that it is getting unburned fuel into the exhaust manifold at idle and when you open the throttle up, enough air gets to it to cause it to explode in the manifold. That would also cause the lack of power problem and will also cause the oil to wash off the cyl walls and wear the sleeves rings and pistons out quick! If the float is brass and has a tiny crack, they can be hard to see, so shake the float and see if you hear liquid in it. You can also clean the float and move it around and see where the gas gets it wet. the crack will be right there.some times if the crack is extremley small you may have to warm up the float in your hand to get the gas inside to expand enough to start leaking. I have fixed them with solder before, BUT don't use too much solder! It will change the float setting when you put it back in becuase it will weigh more. If it has a cork float, better just go get a new one.

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