Decarb before Fogging

Cricket Too

Lieutenant Commander
Joined
May 14, 2003
Messages
1,732
Is it a good idea to decarb motors before fogging them for the winter, or does it not really matter? I usually do it every spring a couple of times before the season, but have heard that it's a good idea to do it before you fog for the winter, just wondering what, if any, the benefits of that are. Thanks, Mike.
 

BillP

Captain
Joined
Aug 10, 2002
Messages
3,290
Re: Decarb before Fogging

I would fog now and decarb at the beginning of the season and let the crud help keep rust away.
 

hondon

Lieutenant Commander
Joined
Jun 11, 2001
Messages
1,922
Re: Decarb before Fogging

Fog now and decarb in the spring.Here is why.Decarb is a wonderfull habit to get into for your engines health,however the chemicals used in that process do,nt stop working when you turn off the key,and take awhile to burn completely out of the crankcase.That means that unless you give this engine at least an hour run after decarb you will be putting it up with that solution eating away at your seals and recircs.Just decarb in the spring.
 

Stargazer

Recruit
Joined
Nov 27, 2004
Messages
1
Re: Decarb before Fogging

Hi guys!!<br /><br />This is my 1st year of owning boat motor(6 hp Evinrude). I have used the fuel stabilizer and changed the gear oil. But I didn't fog the carburator or cylinders. With the cold weather now, can I still do it, or is it too late? (The engine is stored in the tool shed at the island cottage; I won't be able to visit the cottage until the ice freezes.) What's the worst that can happen with not having done the fogging? Also, what is decarbing? Thanks, Bob
 

Cricket Too

Lieutenant Commander
Joined
May 14, 2003
Messages
1,732
Re: Decarb before Fogging

hondon...I was gonna decarb with Deep Creep(Sea Foam in a spray), Deep Creep's claim to fame is that you can use it for many different things, 2 being decarbing and fogging, although I would never use it to fog my motor it's too thin. I can see what your saying about the other engine tuners(decarbs) but I figured this one would be OK, I'll just forget it and decarb in the spring, I thought I remember seeing something on this site once upon a time saying it was a good idea to do it before fogging, but since I haven't done it in 20 years of owning outboards and storing them for the winter, I'll leave it until spring.<br /><br />Stargazer....Welcome to the world of outboards and the site. It sounds like you winterized it pretty well by running the stabilzer through the fuel system and carb as well as changing the lower unit oil before the winter, instead of after and risking cracking your lower unit. If you can't get to the motor for a while or you don't feel like starting it up again, I wouldn't worry about the fogging for this year. Fogging is a thick coating of oil that protects the inside of the motor from moisture and rust while it's not being used, it doesn't really have anything to do with the cold it's just for the extended period of not being used, it's a good idea to always do it if your not gonna use it for a while, but it gets so cold where you are that I doubt there will be much moisture in the air over the winter, but I would fog it from now on to make sure it's protected.<br />Decarbing is the process of getting rid of the carbon that builds up inside the combustion chamber, around the rings, and around the exhaust port. Decarbing is done with either a decarb spray or by putting it in the gas and letting it burn with the gas. You can find decarb, or engine tuner as OMC calls it, at any marine store and most auto part stores.
 

lund17

Petty Officer 1st Class
Joined
Oct 22, 2003
Messages
216
Re: Decarb before Fogging

I fogged with Seafoam deep creep. was at the auto store to buy fogging oil and when I read the can for Deep Creep decided to use that instead. Should I go out and run the boat on muffs to clear it out and then use regular fogging oil?
 

Brew2

Chief Petty Officer
Joined
Jan 12, 2004
Messages
427
Re: Decarb before Fogging

Stargazer,<br /><br />If you are going to your cottage this winter anyway, I'd take a can of fogging oil with you, remove the spark plug(s), spray a bit in the cylinder(s), and then turn the flywheel by hand a few times to move the piston(s). This should give a good coating of oil to protect the motor from any moisture. You can buy an aerosol can of fogging oil at any marine, Canadian Tire, or similar store for around $5-$10. On a motor of your size, a can will probably last you 10 years.<br /><br />When you start it up in the spring, it will really smoke for a while, but that is ok.<br /><br />By the way, I'm jealous. Grew up spending all my free time in Ontario Cottage country. Been in Alberta for 12 years now. Mountains are fun, but there is nothing like a nice clean Ontario lake!<br /><br />Cheers,<br /><br />Brew
 
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