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New water pump + impeller + gaskets and housing. New poppet valve. No tell tale water stream. Overheat alarm never activates while running. Run motor for 90-120 seconds at idle on muffs...no tell tale...stop motor...flush with hose...water flows from tell tale...attempt to restart motor...high heat alarm at "ON" position before "START". Wait a few minutes. Turn key to "ON". No high heat alarm. Remove thermostats just to see if water is getting to them...nope. Nothing but steam. Head gaskets appear fine. My questions...
- what is the path of the water from the water pump, through the engine, then out of the engine via the tell tale?
- how do I test the new water pump to verify that its working and there is no blockage between the water pump and the powerhead?
- does the fact that water flows through the tell tale when flushing with the hose indicate that the water passages are clear?
- i did not flush the motor with the hose while the thermostats were off.
- what role does the water temperature sensor play?
- what role does the thermo switch play?
I will test the thermostats tonight, but I can't imagine that is my problem as there is no water even making it TO the thermostats. Water pump probably needed to be replaced due to time...its been 2 years since it was last serviced and the boat has sat in storage for a year. Poppet valve was replaced due to age...the motor is 20 years old and the poppet valve has never been replaced. Simple enough job and relatively cheap maintenance IMO. That said, I don't want to simply throw money at the problem until I fix it. I'd like to understand exactly WHY the motor doesn't seem to getting any water.
Any advice welcome. Thanks in advance.
- what is the path of the water from the water pump, through the engine, then out of the engine via the tell tale?
- how do I test the new water pump to verify that its working and there is no blockage between the water pump and the powerhead?
- does the fact that water flows through the tell tale when flushing with the hose indicate that the water passages are clear?
- i did not flush the motor with the hose while the thermostats were off.
- what role does the water temperature sensor play?
- what role does the thermo switch play?
I will test the thermostats tonight, but I can't imagine that is my problem as there is no water even making it TO the thermostats. Water pump probably needed to be replaced due to time...its been 2 years since it was last serviced and the boat has sat in storage for a year. Poppet valve was replaced due to age...the motor is 20 years old and the poppet valve has never been replaced. Simple enough job and relatively cheap maintenance IMO. That said, I don't want to simply throw money at the problem until I fix it. I'd like to understand exactly WHY the motor doesn't seem to getting any water.
Any advice welcome. Thanks in advance.
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