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[Morty]

Can't find anything on the net so far...  Anyone out there have good advice on how I would best fog my engine for storage?  (Planning on doing it dry land)

When it's already near freezing, do I need to be running much water through the block? 
Is it worth hooking it up to the hot waer tap and running hot water through the hose adapter?

[canso]

at this point, maybe just remove the spark plugs and spray the fogging spray into the holes, crank the engine, then repeat.
if its newer you can unplug the electrical connector from the coils so they don't fire, while you are doing this.
If your battery is out, you could spin the flywheel by hand.

[camtheman]

you should probably stay away from water now
pull off the air box if its got one
fire it up and spray the oil in at the same time when youve got nasty smelling exhaust kill it and your done

[clarki]

With no disrespect intended toward either camtheman or canso, I would be cautious about maintaining a very expensive motor with the advice given by two guys on the internet when their posts contain the words "maybe just" and "should probably"

No disrespect dudes.

[canso]

since clarki doesn’t like my post, and probably has no idea what’s going on, I will give the long answer instead.

Fog is what develops  on the cylinder walls when moisture and air react with the iron creating surface rust  (fog).  It looks the same as brake rotors on a car during a wet day, you will notice they turn a foggy orange when they sit for a short period of time.

There are many different kinds of spays that all do the same.

Mercury Storage Seal
Fogging  Spray
Anti Fogging Spray for engines
No fog

Since you have a  Sport Jet I will refer to Mercury Storage Seal instructions.

-Run engine slowly with proper water cooling and introduce 4 - 6 ounces of Mercury Storage Seal
 through each carburetor to stall the engine.

-Remove spark plugs and spray approximately 1 ounce of  Mercury Storage Seal into each spark plug hole.

-Turn engine over several times by rewind starter or electric starter.

-Replace spark plugs.

[clarki]

We're not in grade 3 here, Canso. I merely questioned the reliability of your information based upon the tentative wording of your post. You may have a great deal of expertise in jet maintenance, but how you communicated it didn't inspire confidence. 

However, after you took offense and then took a shot at me, you provided some very clear instructions. Thank you.

Let me guess...you know alot about jets, but not so much about conflict resolution. Just a hunch...

[tnt]

take it to the water
fill the tank with a couple jugs of stabilizer
or run it on the flush (yes Sport Jets have a Flush and gear oil so it is OK)
pull the air intake off to the carb
get a can of fogging oil
set the RPM a little higher than idle and start spraying the fogging oil in... as the motor starts smoking significantly more than
what a sport jet does... run forward and shut off the motor.... make sure you drain any raw waters lines
pretty basic... dont just spray into the cylinders and crank the motor...

[Morty]

Thanks Guys,

Did my best with your advice.  One thing I learned during the process is that the 175Sportjet has just too much power/torque to actually stall out with just one guy spraying into one carb throat at a time.  Dancing between 3 2-bbl's is a pretty challenging task.  Watching the smoke and then shutting down as soon as smoke got heavier was the best I could accomplish.

One thing that a marine mechanic mentioned was concern for a varnish layer building up inside the fuel jets when the remaining gas evaporates.  Will gas passing through there in the spring clear that out?  or is there an additive I can add to fuel that will reduce/ clean out that varnish?

(interesting counselling Clarki)

RR

[Eagleye]

I don't know much about outboards so I'm not sure if this applies but I always run mine dry after use by disconnecting the fuel hose and running it down until it starts to cut out then pull the choke and let it putter out to prevent gas buildup.

[robj]

IMO I would run 3 cans of the spray simultaneously until it stalls.  That way all cylinders are fogged.  WRT varnish, very simple drain the fuel from the carbs once the fogging is completed.   The most important thing, even more important than fogging is to drain all the water from the waterways within the engine.  You may want to refer to your manual but trapped water within the cooling system can lead to engine block cracking if the water freezes.  Fogging is important but not as important as draining the water from the cooling system in winter.

Have a great day

Rob.