Took my 1995 20' Crownline with Mercruiser 5.7 Thunderbolt Ignition to
Lake Tahoe over the weekend where the air is very thin and had a little
trouble. Could only start the engine by advancing the throttle all the
way. The engine started everytime but stalled most of the time when set
to idle. The engine runs fine at low altitudes. Any suggestions would
be appreciated. Bob J.