Well my boat is now out of the water and winterized. Now here is my dilemna:
Every spring so far I have trouble getting the raw water pump primed. Once it's primed, it is fine, but I have to pour copious amounts of water down the tube from the U-cooler into the water pump.
The reason is that the pump has to SUCK water through an 8' pipe to the v-drive cooler then back through another 8' hose back to the pump. When the hoses are empty, the pump can't pull water through.
My question: Why is it designed this way, why can't the pump just suck it from the through-hull fitting and pressure it through the v-drive cooler and back to the u-cooler? Is it maybe that the v-drive can only handle negative pressure?
Every spring so far I have trouble getting the raw water pump primed. Once it's primed, it is fine, but I have to pour copious amounts of water down the tube from the U-cooler into the water pump.
The reason is that the pump has to SUCK water through an 8' pipe to the v-drive cooler then back through another 8' hose back to the pump. When the hoses are empty, the pump can't pull water through.
My question: Why is it designed this way, why can't the pump just suck it from the through-hull fitting and pressure it through the v-drive cooler and back to the u-cooler? Is it maybe that the v-drive can only handle negative pressure?