"il_papa" wrote in message
oups.com...
My first post here .. I launched my boat today after the long danish
winter, to experience problems with my four-stroke 4HP Mariner
Outboard. The motor started fine (only 4 - 5 attempts) For some reason
or other the motor cuts out after a few minutes, and I have a feeling
that there is something up with the fuel supply. I have an external
fuel tank which is positioned below the motor's fuel inlet, so the
fuel hose has to travel up before being lead through the transom and
into the motor .... could this possible cause the problem, i.e. a fuel
syphon problem, is there a maximum fuel hose length (mine is probably
about 2m long? The motor will start again after 30 seconds or so after
I have pumped more fuel to the motor and given it some choke. Any help
appreciated.


Check the vent on the remote tank. Oftentimes after a storage episode
the rubber grommet in the vent in the fuel tank cap becomes squashed and
collapsed so even if it's in the open position it fails to allow air
into the tank and a vacuum develops. Try running the engine with the
fuel fill cap loose at the threads to see if the problem stops. If so
troubleshoot the vent mechanism or purchase a new cap.

Wilbur Hubbard