Flushing mercruiser

[mark123456]

Currently I am flushing my 4.3 MPI/alpha after every salt water use using muffs, (boat is moored in salt water), There must be an easier way, I read about adding a three way valve to the intake hose and dumping the water from impeller overboard and piping in a supply connection from garden hose but those hoses are not easily accessible in my boat. Could you add T fittings and female quick couplers to both sides of the thermostat and flush them independently with engine off.

 

[Bt Doctur]

 

[airshot]

If you are mooring the boat in salt water, wouldn't flushing after use be rather redundant? I would assume the salt water will be brought up into the system through the outdrive even though it is just sitting.

 

[mark123456]

It will make its way in somewhat but I asume not through the entire engine and manifolds, the least amount of cast iron- salt water contact the better

 

[mark123456]

I have seen that before, but in my bayliner 205 it is impossible to get to that hose, it is at the back under the engine

 

[biggjimm]

Not 100% sure how your V-6 is set up but if you follow that hose it should go up to the intake manifold or circulating pump or someplace & perhaps you could access it better up at the top/front of the engine??? Just an idea. Jim.

 

[Bt Doctur]

that hose should go to the PS cooler on the port side of the motor and then run to the therm housing..got to be some room along that path