My boat fired right up after the long winter but water isn't flowing through the outdrive. I had it in the driveway with the flusher on the outdrive, disconnected the intake hose from the t-stat, started it up and got some flow but definitely not enough. What could it be? The impeller was my first thought but the flow was strong when I winterized the motor last year. How likely is it for a cooler to be blocked? I think there are 3 coolers inline before water gets to the motor, pwr steering, oil, and fuel.

What's worse is that my warranty is up Monday!!

What drive and how many hrs? The rubber impellers take a set in the winter and then the blades break off when you start it up in spring. Make sure you find all the parts. The like to end up in the coolers.

must likely the impeller, is gummed up or full of ****, i would check that first, or try blowing out the lines to see if the is good pressure.

It's a Bravo HP LWP 47hrs. How do I check the impeller without taking the lower off? Would Merc cover this, I still have 2 days left on my warranty?

have to pull apart to check, see by eye if there is damage, they might i would check, or they will say it was a wear factor, or you ran it with no water supply depends on your dealership.

DJM,

The impellor is on the engine, sea pump is low and to the starboard side - As formula 31 pointed out, This is pretty common in the spring, and find all the pieces.

The impellor is not covered by the warranty.

I thought the impeller was in the drive?

the impeller is in the lower unit on alpha drives, on bravo it is in the raw water pump on the engine, follow your water lines from lower unit to pump, its has a supply and return hose on the back of the pump.

hope that was clear, but the supply line draws the water in from lower unit, and return pushes it through engine.

No chit? Is it something a mechanically inclined person can do? I hope it's easier than changing an alpha impeller.