Fuel pressure leak?

[SeadogNZ]

I've managed to get my 5.5 seahorse to run for longer only by pumping bulb while running. Ive found whilst pumping the primer till it gets firm, a bit of gas will leak out from the connection piece is it possible air is getting in?

 

[F_R]

Re: Fuel pressure leak?

I've managed to get my 5.5 seahorse to run for longer only by pumping bulb while running. Ive found whilst pumping the primer till it gets firm, a bit of gas will leak out from the connection piece is it possible air is getting in?

Getting a little confused here. By priming the "bulb" do you mean it has been converted to a fuel pump system? The 5.5 had a pressurized tank, with a primer button on the tank.

If it has been converted, yes gas leaking out means air can also be sucked in.

If it has not been converted, bad seals in the connector may prevent the motor from building up pressure in the tank when it is running. Is it building pressure?

 

[R.Johnson]

Re: Fuel pressure leak?

Evinrude made the 5.5 Fisherman until 1962, they had a single line tank.

 

[SeadogNZ]

Re: Fuel pressure leak?

Sorry about that i mean the push botton on the tank cheers.

 

[SeadogNZ]

Re: Fuel pressure leak?

How would i tell if its building up pressure?

 

[F_R]

Re: Fuel pressure leak?

As the motor runs, it pumps air down to the tank by way of the second hose. After it runs a few minutes, if you loosen the gas cap you should hear a hiss of air.

You may have to pump the primer button a few extra times to keep it running till it has a chance to pump in enough air to keep it going on it's own, especially if the tank is nearly empty.