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Having trouble with my refurbished gas tank leaking air. After trying to start my 1958 Evinrude 10 hp Sportwin, it would start rev up very high and then die and wouldn’t run until I primed it again. Not getting fuel.
I heard air hissing from the fuel tank which is new to me purchased with the motor, a 2 line gas tank that I refurbished with a new rubber diaphragm gasket, new cork sealing gasket, vinyl gaskets for the screws. I used my gear case tester modified with a 1/8 inch barb fitting to pump air into the tank through the air line fitting on the tank.
The tank is leaking from the relief valve, see attached photo with golf tee.
From the diagram above the relief valve part 46, OEM 0302136 is still soft and not brittle. The relief valve part 46 is seated against the housing and held in position by a spring. The relief valve has an indentation with the hole from the housing so I’m relatively confident it is in correctly. Upon careful examination I am missing part 29, OEM VALVE 0301802, I have misplaced it. I thought it was the center of the washer part 45. Mistake on my part.
What does the part 29 do. Appreciate your help.
Thank you.