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gshadel
10-23-2007 15:02:12
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Re: Rebuilt or new carb? in reply to greenbank, 10-22-2007 18:28:27
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greenbank, I saw your posts below also, sounds like you have a VERY frustrating problem. You say your carb does not leak until you crank the engine, then it leaks? The other guys are right, your MS carb is pretty simple, I wouldn't give up on it just yet, the price of a new carb is quite high. I see you replaced the coil also. Make sure you have a nice fat blue spark, not a skinny orange/yellow spark. Your engine may not run with a weak spark. Most "carb" problems are really weak ignition problems
Here's a couple ideas for you to consider for your leaky carb.....
Just for giggles, drop your carb & crank your engine with your hand over the intake port, just to make sure you don't have some kind of weird valve problem that is belching air back towards the carb (when the likely things don't work, gotta start looking at the unlikely things).
The your carb is very sensitive to fuel level in the fuel bowl, you can jamb a piece of clear tubing into the drain plug hole & hold the tubing up to the side of the carb, like a water level, to see where your fuel bowl level is sitting, it should be just below the bowl gasket.
You can also try draining your carb bowl with the shut-off closed, plug the drain, open the shut-off and start cranking the engine at the same time to see if it still floods/leaks. That my provide some insight.
I am not clear on where exactly your carb is leaking from... maybe I missed that. Perhaps you cleaned the carb soooo gooood that you opened-up leakage thru a previous small crack in the casting that was varnished over. Stranger things have happened. Scrutinize your carb body inside & out with a bright light and a mag. glass .George
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