Getting irritated with winterizing 22v

[matt4124]

Ok so I’m going through these steps with a 2004 22v
So far I’ve only located 3 blue drains 2 on port side and 2 hoses that have a little thumb release hose
Now I’m reading to remove the knock sensor?
Also where do I empty out the trans cooler or vdrive water drain?
Would you run the RV safe coolant after? If so what do I need to do so
Live in Michigan and it’s getting to the 30’s quickly

[chpthril]

What engine? Merc or MP

[matt4124]

Merc mag 350
I’ve found the main drain all the way in the back
I’ve found the 2 right above each other
There were 2 line that I had to release the thumb clips

[skiguy]

A quick tip for you. When draining the water out of the block I cut about a 7 in. piece of coat hanger wire and probe the block drain holes a bit to knock loose any sediment that tends to block the holes and prevent the block from fully draining. RV anti-freeze doesn’t like to be diluted in any case and in colder climates getting as much water out as possible before filling with anti-freeze is extra important.


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[mikemcclain8]

Ok so I’m going through these steps with a 2004 22v
So far I’ve only located 3 blue drains 2 on port side and 2 hoses that have a little thumb release hose
Now I’m reading to remove the knock sensor?
Also where do I empty out the trans cooler or vdrive water drain?
Would you run the RV safe coolant after? If so what do I need to do so
Live in Michigan and it’s getting to the 30’s quickly

knock.jpg

Knock sensor should be towards the bottom of the block with a wired piece running to it. At least, that's where mine is on a 2005.

[mikemcclain8]

I believe it sits lower than the other drain spots but I could we wrong. When I remove mine, the water drains out and I leave it out. My situation may be different though as I have my boat in a garage all winter so i don't do the antifreeze. Plus, I live in Missouri and it doesn't get nearly as cold as Michigan and our cold doesn't last as long. I went to College in Alma, MI and they were the most miserable winters I can remember.

[chpthril]

On a Marine Power engine, the knock sensor(s) is the drain plug for one side of the block. Merc I think, used petcocks or plugs.