Gurgling noise from engine!????

[michaud500]

Hey eveyone I am new to the forum and the boat world. I have a question about my out board. It is a 1969 Mercury 500 Kiekhaefer #2629264. I have taken the boat out several times and need help with a diagnosis. At first start I squeeze the primer bulb but the last time I did this there seemed to be no resistance and I could smell and see fuel coming out of the engine area, it was also all over the water. Eveything looks to be connected. No loose hose and they are in good condition. When the engine is hot it will not start easily nor will it idle too well. I have put the correct amount of oil in fuel and changed the plugs which has helped with starting and she at least will idle now. The previous owner had been using too much oil. Today I tilted the engine and heard a girgling coming through the exhaust by the prop. I look up at the top and there was gas trickling out of the cowling area into the boat. So I tilted it back to the upright position and it stopped. Could this be a bad float? Or just rebuild the carb altogether. One other thing I forgot was when I had a hard time starting when hot my friend would slightly squeeze the primer bulb and it would start.

Thanks for any advise!!

 

[Garrett1992]

Re: Gurgling noise from engine!????

Rebuild the carburetor(s). new gaskets, valves, seats, and check float levels. The gas is most likely coming out the front of the carburetor(s) when you squeeze the bulb because the valves are not seating properly.

 

[michaud500]

Re: Gurgling noise from engine!????

Thanks for the explanation. I kind of thought it was something like that. Will get rebuild kit and see what happens. I dont have a manual yet. Is there any specs that I need to now to make this rebuild work right the first time around?? I know enough to count how many turn in for the set screws for the idle and such. I ordered a rebuild kit and float for the carb, oldmercs.com

 

[Garrett1992]

Re: Gurgling noise from engine!????

I have no idea about the set screws. Mine have fixed jets. I would recommend going on ebay and finding yourself a service manual for your motor. that will be your best help. It has the float level settings and..well everything really. I wouldn't buy a seloc manual, i would get the real deal, a mercury manual. Used is fine. good luck

 

[michaud500]

Re: Gurgling noise from engine!????

Hey thanks for the tip!!!

 

[Gomer50]

Re: Gurgling noise from engine!????

This might be of some help.