[Tommygun]

Tried following the manual and put the 2 stroke oil in the water seperating fuel filter per the owner's manual, then tried running the boat at idle. It says that the engine is supposed to start smoking, then you shut it off. It will not smoke no matter what I do. I've tried changing the ratio of gas/oil in the filter, I think one time even filled it all the way up with oil. Nadda. And I've let it run for like 5 minutes at least, with no change. This year I wanted to run antifreeze through the motor as well, so even if I do get it to work, the timing will be a pain. Should I just pull the plugs and spray fogging oil into each cylinder while turning the engine over?

 

[snivley whiplash]

fuel brine mix in an external fuel can is the way to do it. mix 2 stroke oil, fuel stabilizer and fuel at a 16 to 1 mix. connect to engine run for 10 minutes and drain engine. NOTE a big block will not smoke on this mixture, but it is still doing its job. also mercury has changed the fogging oil mixture in a can. I have been using it on efi engines, verry little smoke, minor traces in the water and it smells like cerocene. very different mixture. check it out

 

[Tommygun]

Is this some kind of special setup I need to buy? Where does it connect? Or do you mean mix it in the can then pour back into the fuel filter?

 

[dbkski]

What you need:
1 gallon gasoline
1 ounce Sta-Bil or equivalent
12.8 ounces 2 cycle TC-W3 outboard oil
1 portable gas can

Mix the above contents in the gas can. Disconnect fuel line from boat's gas tank.
Put end of fuel line into the gas can. Start and run engine for 5 minutes at
1300 RPM. This is from Mercury's service bulletin for EFI/MPI engines.
If you then want to remove the spark plugs and spray fogging oil into each
cylinder, go ahead, as it will not hurt anything.

 

[Tommygun]

Ah yes, I had to think about this for a second- there is no "in tank" pump on the marine EFI as there is with a fuel injected car or truck, it should draw the fuel with no problem....do you still put any oil in the filter, or just leave it? Thanks, this will make the process with the antifreeze portion much easier!

 

[dbkski]

No. Putting the oil directly into the filter is the "quick and dirty" way to do the
same thing. I use the gas can method since I can control the "recipe" and not
guess about my ratios. After the fogging process I put on a new water separating
fuel filter.

 

[Horse power]

I know some people just run the tank down real low and dump the 2 cycle oil right in the gas tank.

 

[Tommygun]

What you need:
1 gallon gasoline
1 ounce Sta-Bil or equivalent
12.8 ounces 2 cycle TC-W3 outboard oil
1 portable gas can

Mix the above contents in the gas can. Disconnect fuel line from boat's gas tank.
Put end of fuel line into the gas can. Start and run engine for 5 minutes at
1300 RPM. This is from Mercury's service bulletin for EFI/MPI engines.
If you then want to remove the spark plugs and spray fogging oil into each
cylinder, go ahead, as it will not hurt anything.

Thank you, this seemed to work really well. It actually started smoking really good on this mixture,- it never did that before when using the filter method. I put together a fuel feed assembly for the gas can using some brass fittings and a couple of old pieces of air hose. I reread the post, and realized I omitted the 1300 RPM part- I did this this at normal idle because I was running antifreeze through with an electric pump at the same time and didn't want to starve the pump or collapse the hose. At idle, do you think it was adequetly fogged, or do I need to start pulling plugs and break out the can of red fogging fluid?

 

[dbkski]

The 1300 RPM is just so that the engine does not bog down and die. I always run
the engine until up to operating temperature so I can change the oil easier. Then
I drain all water out. Then add 4 gallons antifreeze to block, hoses, and manifolds.
Then I run 2 additional gallons of antifreeze through the system using the
"bucket method". Then I change the water separating fuel filter so it is clean for next
year. You should be good to go.

 

[pureadrenaline1]

I know some people just run the tank down real low and dump the 2 cycle oil right in the gas tank.

Never heard of that one

 

[Horse power]

Never heard of that one

They dump it in with there stabil. then when they fill up in the summer there good to go. With a little extra oil to help lube stuff up.

What will it hurt?

 

[GRH]

Spray some fogging oil in thru the intake while you're running the anti freeze thru the cooling system... and forget about it!

 

[Horse power]

Spray some fogging oil in thru the intake while you're running the anti freeze thru the cooling system... and forget about it!

Thats what i do......

 

[Boat Trash]

I prefer this method.

Warm up the engine, then run antifreeze through the motor. shut off engine. Remove the belt to the water pump. Restart engine and fog through carb/intake with fogging spray.

By removing the water pump belt, it will prevent the antifreeze from getting pushed out of the system. Your engine will not overheat since it is full of fluid and you arent going to run it for more than 30 seconds while fogging it. You dont have to worry about burning up your impeller because it wont be turning.

I dont leave anything in my headers though, I drain them after starting the engine, every time.