Mercury Tell Tale / Cooling
Bit puzzled about the tell tale / water pump on my 1998 3 Cyl Mercury Outboard.. Went out on it on Sunday, all fine, pumping water well as usual, nothing abnormal.
Got home, put it on muffs as I always do to flush through, but no tell tale.
Removed cowl and unplugged tell tale hose from engine block, all fine (no blockage)
Removed gearbox, checked impeller, all fine.
Removed thermostat, cleaned and tested thermostat and housing, all fine, working correctly.
Put hosepipe up through leg of engine into hole water pump goes into, water circulates around engine and exits tell tale as normal, all fine.
When re-assembled still can't get ANY water to come out of the tell tale, just coming out of gear casing area.
Is it because the weather is cold and its taking longer for engine to warm up, thermostat is staying closed to circulate warm water around engine, has something internal frozen and cracked, is the wear on the water pump hosing and wear plate too excessive..? Bit stuck without taking it on the water for a proper test.
Any thoughts / suggestions would be appreciated!