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Originally Posted by sailingdog
It could also be a blocked fuel tank vent line. If insects, like wasps, have built a nest in the line... you can have similar problems as well. |
This one has caught me before. It's possible for some spider debris to actually form a flap that doesn't fully seal until the pressure in the vent
line is "intaking" enough. This means the
fuel pump is only gradually overcome. Turn off the engine and the suction dissipates...and you can miraculously run again.
Particularly as it is springtime, you may be victim of a wee critter having make a winter home in your vent
line. Remove it from the tank side and blow out...if there is any obstruction, take it off the vent as well and blast it with an air gun. Run a dental pick (one of my favourite boat tools) out through the vent and check that you've got those little screens in. Barring that, glue down some screening over the external vent holes to prevent critter ingress.