Bulb/fuel line issue….

[steplift20]

What phat and spare and steplift says. By removing or breaking the seal on the cap it will proved air to flow in, if it does than I would check out the vent. Could be crimped,kinked or blocked. If it make no change than I would look in the fuel tank for blockage. You can use a portable tank and see if that fixes the problem , if it does than its in the tank or hose going into the tank ,if it stays the same I would change the bulb and the lines if it's not hard. But I would wait for spareparts or phat says. I hope they would agree eight me if not than I will listen to them. We want to get you home safe and have a happy boat,