to winterize a I/O 4.3 ti says to run a pick up hose from the water pump that is the 3/4 pipe threads on top?

Answer 1

Make sure you use an "R/V" Antifreeze, it is non toxic and has a -50 bursting point. Regular anitfreeze can be toxic and it is now illegal to spill it since it has been classifed as a toxic substance.

R/V antifreeze is what you put into drinking water systems on an R/V to winterize the system, it is non toxic and will not get you into trouble like having floresent green stuff flowing out of your yard into the street!

Otherwise, you just pump it though your system like was discibed earlier by the others. When the exhaust starts pumping the red stuff out, you are done.

Answer 2

OK what brand and year of I/O is this some I/Os have the raw water pump in the lower unit and others it have it mounted on the engine. The circulating pump and the raw water pump serve two different functions, the raw water pump picks up water from the lake/ocean and is usually a small pump mounted on the side of the engine. You can Identify it because it will have one hose running to it from the back of the engine and one running from it to the thermostat housing
the pick up hose is the hose that runs from the transom shield
to the pump. Disconnect the hose at the oil cooler and attach the winterizing hose to the oil cooler.

Before you winterize get the engine up to operating temperature otherwise the thermostat will not be open and you'll run all your antifreeze out the exhaust without filling the engine block . don't forget storage fogging oil the instructions are on the can.

If the raw water pump is in the lower unit then follow the advise about using ear muffs

By only draining the block rust will form and may plug some of the water passages causing your engine to overheat.next spring.

If all else fails take it to your dealer it's a lot less expensive to have him winterize your boat correctly than to replace the engine

Answer 3

I not sure of what this is. If you talk of running the engine out of water in your yard, you use "Earmuffs".
http://lakesidecanvas.com/images/earmuffs_on.jpg

OK, I think some. I thinking this is to run Anti-Freeze into the engine. What I would try, as I never done this. Look at the water pump on the front of the engine. The hose on bottom is the pick-up hose. You could duck-tape a hose to that hose so it take anti-freeze into the engine. Then just put the other end of that suck hose into a bottle of anti-freeze and run engine until you see green come from the prop.
I never did this, I remove the Drain Plugs from the engine (Yours may be different) Normally they Brass and Gold colored. Remove the Water Pump Hoses and just leave off.
There usually a Drain Plug or sometimes it a Tee looking valve you open, may be one on each side of the block. Then the exhaust manifold will have one on bottom.
What you say, there probably a Plug on the water pump usually a 1/2 inch ratchet will fit it, NO Socket just the square of the ratchet. It unscrew and you can thread a 3/4 inch pipe into this and use a rubber hose to stick into the anti-freeze bottle.

Answer 4

I have an I/O, and here's what I do. Go to a marine store and buy the ear muffs, and a winterizing container (this is a clear plastic tank that you fill with marine/rv antifreeze, and has a hose coming out the bottom of it. Now, you need to put the earmuffs around the water pickup gills, that are located on the bottom of your sterndrive, (lower unit). Make sure the winterizing tank is filled with antifreeze, and turn the valve so its flowing. Then, quickly start the engine, and run it until you see the color of the antifreeze coming out of your exhaust, then turn the engine off. Watch the tank closely too, you don't ever want to run the engine dry, even for a few seconds. That's it, you now have antifreeze throughout your engine, just leave it for the winter.