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Winterizing my 4.3l VP's
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Author:  Technologic80 [ Mon Oct 21, 2013 8:07 pm ]
Post subject:  Winterizing my 4.3l VP's
Can I get a confirmation that I winterized my engines correctly? Twin 4.3l TBI Volvo Pentas (1997 Model Year).

I removed both block drains, port and starboard sides of the engines. I stuck a coat hanger up there, and water gushed out - probably a gallon or more, each side of the block. I then re-coat hangered it. No more water came out.

I then removed the hoses on the front of my manifolds. Water gushed out of each manifold.

I then removed the big fat hose on the front of the engine, that goes down to the circulating pump. More water came out.

I removed both lines from the engine mounted raw water pump (the one that houses the impellers).

I took the hose that goes to back towards the transom and poured -100f anti-freeze in it until it came out of the outdrive, on each engine.

I then poured -100f antifreeze into the big fat hose until purple anti-freeze came out of the engine block drains.

I removed the vapor separator tank hose from the t-stat housing and blew into it. I heard liquid going into the bilge, at the rear of the engine. I blew into it until it was clear.

<<Whew>>. Did I forget anything - sound like I did everything correctly?

I noticed a square plug on the front of the intake manifold - do I need to remove that too?
Author:  LouC [ Mon Oct 21, 2013 11:37 pm ]
Post subject:  Re: Winterizing my 4.3l VP's
I recall reading somewhere that the plug you mentioned should be removed. The older ones like mine don't have that plug. The rest sounds fine.
Author:  rpengr [ Tue Oct 22, 2013 12:01 am ]
Post subject:  Re: Winterizing my 4.3l VP's
How about the drain plugs at the back of your exhaust manifolds?
Other than that it sounds like you have the engine covered.
Author:  noexcuses [ Tue Oct 22, 2013 4:05 pm ]
Post subject:  Re: Winterizing my 4.3l VP's
Does your water heater hose attache to your manifolds? Did you remove that as well.
Author:  pickledboater [ Tue Oct 22, 2013 7:13 pm ]
Post subject:  Re: Winterizing my 4.3l VP's
T-80,
The plug on the front of the intake manifold needs to be removed. You won't get much water out, but it could be enough in there to cause a problem. I remove it, the ones on the back of the exhaust manifolds and the block plugs and leave them out for the winter. I leave the hoses disconnected as well. Oh, one last thought, I also remove the bracket that stabilizes the raw water pump and rotate it down to dump the water out of it too.
Author:  Technologic80 [ Tue Oct 22, 2013 8:57 pm ]
Post subject:  Re: Winterizing my 4.3l VP's
Ok Thanks for all the replies!!

I went out tonight and removed the plug from the front of the intake manifolds on each engine.

I had to remove the t-stat housing to get at it :evil: SOoooooo while I was in there, with the intake manifold plug removed AND the t-stat housing off, I poured -100f anti-freeze into the intake manifold until it came out of the plug in the front AND the block drains.

Noteworthy observation: When I removed the t-stat housing, the intake manifold DID have -100f antifreeze in it already. Probably from when I flushed the block out by pouring it through the thermostat housing I guess? Either way, I was already in there and wanted to be "sure" it wasnt diluted with a bunch of water so thats why I decided to flush it out with what ever -100f antifreeze I had left....

I then got out, and lowered the trailer jack as low as it would go - this tilted the engines forward so whatever -100f was left in there came out.

Im going to call this one a wrap!! (we really need a "thumbs up" smiley on the forums) lol
Author:  pickledboater [ Wed Oct 23, 2013 10:07 pm ]
Post subject:  Re: Winterizing my 4.3l VP's
Glad we got em done, not that putting them away for the winter is a good thing, but...
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