My water pump was replaced 3 months ago,but it stopped spraying water yesterday, How do I unclog the intake / Outflow?
check the thermostat, it could be clogged.
its the impeller. flush the motor and see if you get little pieces of rubber (the fins of the impeller). and if you still have a warranty then your dealer should fix it for you. a new impeller cost ten buck so if you want to do the labor it will cost you ten bucks
what motor/year/horsepower? If something's blocking the intake you'll see it stuck to the lower unit. Stick a small piece of wire up into the nipple on the cowl. Check to be sure the hose from cylinder head to the nipple hasn't sprung a leak. Take that hose off and make sure nothing's crawled up in there. Remove the thermostat cover see if there's a blockage in there. While you've got it off, toss the thermostat into a pot of water on the stove with a kitchen thermometer, see whether it opens at the proper temp (which should be embossed on the stat somewhere). Drop the lower unit see what's up with your new water pump. Maybe the water tube somehow came off the pump discharge outlet. If you're in the habit of starting your motor without supplying water to the lower unit then you've already ruined your new impeller. If there were any pieces missing from the old impeller when you removed it, then you've got neoprene rubber somewhere in the water tube or powerhead blocking the flow of water; all you can do is start disassembling till you find it.
Check and see if the water impeller needs to be replaced. They are only made of rubber. Best of luck.
