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#21
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![]() "skinny32" wrote in message lkaboutboats.com... YOU DON'T HAVE TO REBUILD THE CARB!!! Just open it up carefully. clean out the the area where your float is located. try not to damage the gasket. Make sure the float will move up and down very easly. However, if it does not, then you will need to install a carburater kit. The condition commonly referred to as a "stuck float" is rarely caused by the float actually sticking. It is usually caused by the valve that the float operates either sticking, getting worn to the point it won't seal, or having something jam in it, keeping it open. I have seen cases where the float was damaged and didn't float anymore, but that is pretty rare. I would recommend getting a rebuild kit that included a new float valve and seat and a complete set of gaskets. If you don't feel up to rebuilding it yourself you might be better off to take the carburetor to a place that specializes in rebuilding carburetors and let them do it. Rod |
#22
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Floats can hang up if they are bent out of shape.
I have an older 4GC rochestor setup. The float alignment in these carbs is critical and everything looked fine when the top was off. But put it back in and it would slowly flood. The problem was the float would rise up and slightly hit the backside of the float bowl preventing the needle valve from seating fully. I only discovered this after I installed an electric fuel pump setup. So much fuel drained into the cylinder it locked and would not even crank over. I have to assume the engine was wasting a lot of expensive gas. "Sonny H" wrote in message ... Greetings, I was on the lake yesterday in my '93, 18ft Thompson 4.3L Mercruiser, with carburetor and electric fuel pump. The engine literally locked up when coming to a 'slow down' with the boat. I tried to restart it and it acted like a low battery. The first thing I thought of is: "ok we're overheated" but the temperature was way under 150. The engine had a pretty big jerk from the starter trying so hard. so I knew it wasn't a low battery or bad starter. Sometimes I would get it started and all of a sudden a lock up. I had to be towed back to the boat ramp. This engine did not overheat. I felt the manifolds and they wasn't barely even warm. When I got home - I hooked up the ear muffs and it started right up. Ran normal. It had me scratching my head. I checked the oil and noticed it was about 2 quarts over the full mark. It was not milky. So no water getting in the oil. I drained the oil and it smelled like gas. I'm guessing gas is getting into the oil from the Carb. So the engine lock up was from the crankcase being totally full of oil (and gas in this case.) Now my questions a Do I just need a Carb rebuild kit, or new Carb? Is there anything else that can cause this? Has anyone ever had this problem? Thanks for any comments/opinions. Sonny |
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