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Well it all started when we tried to start the engine once we put it on the boat the first time, it ran well in the test tank but it wouldn't start on the boat. My friend and I thought there might be a blockage in the carburettor so he disconnected the fuel line to the carb and put a 12 volt car compressor straight into the carb. the pressure built up to about 80lb then suddenly dropped to zero. We reattached the fuel line and it started right away on the switch. Once it was warm we could stop and start as normal. Once it had cooled down (the next day) it wouldn't start again. We then attached the compressor again and the same thing happened. As this was not normal we took the carburettor off and stripped it completely, checked all the valves, float and blew through all the channels. We even blew through the fuel inlet, turning the carb up and down to ensure the float valve was operating properly. We then attached it back on the engine, pumped up the ball valve from the tank and we could hear the fuel going into the carburettor. Tried to start it and the same thing happened. wouldn't start. We are totally baffled as to the cause? have had the carburettor off several times but cannot understand what the problem is. If we had another carburettor we would try that but as they seem to be like chickens teeth or very expensive we don't have that option. The fuel pump seems to operate OK and builds up pressure so we don't think it is that.. ???? Hope this helps..Explain better ????
