1978 55 hp evinrude fuel system problem

[bodbo30]

i took my boat out, i was going full throttle and all out the sudden the boat just lost almost all power. I checked the bulb and it was completely flat. The only way to get it pumped back up was disconnecting it from the motor. I got it pumped back up and i reconnected it. I left the motor cover off and started going again. This time iwatched the fuel lines as i was going full throttle. I noticed air getting in the gas line from carb to carb, and the bulb went flat again. i was wondering if anybody knew what this could be. It only does this at full throttle. if anyone has any ideas please le me know.

 

[tashasdaddy]

Re: 1978 55 hp evinrude fuel system problem

clogged vent or the gas tank, or vent not open. classic case. the tank has to have air for the pump to get gas. the pump created a vacuum in the tank, and the bulb collapsed. or tank not connect to hose correctly. the is also an arrow on the bulb, it points to the motor.

 

[bodbo30]

Re: 1978 55 hp evinrude fuel system problem

thank you for your reply. So this does not sound like a carb problem or motor problem? should i replace the cap on gas tank or replace the whole gas tank itself? Thanks for your help.


bodbo30