Fogging a 4-stroke sled motor

Do you fog your 4-stroke engine?

  • Yes

    Votes: 0 0.0%

  • No

    Votes: 17 100.0%
  • Total voters
    17
R

russholio

Well-known member
I don't currently own a 4-stroke, but I'm considering one in my next sled. So, I'm trying to learn as much as I can about them before I make a final decision. I've seen a variety of opinions on this over on DooTalk, so I've decided to put it to the experts here on JD.

If you own a 4-stroke, do you fog it or not? Why or why not? Although I'm most interested in hearing from Doo owners (as that's what I'm considering), I welcome responses from ALL 4-stroke owners. But please, respond only if you own one yourself or have intimate knowledge of 4-strokes in a snowmobile. I'm not interested in hearsay or in 2-strokes. I already have a 2-stroke and know how and why to fog it. Sorry, not trying to sound like a jerk, I'm just trying to cut to the chase.

Thanks!
 
W

whitedust

Well-known member
Yamaha 150 have not fogged since 2008 runs great same pugs 9000 miles so far. Used to start up from time to time to bake out moisture but didn't do that last year until late Nov & started right up ran super this year. I do use fully Syn oil & change once a year. Spring came on so fast this year just washed & waxed, greased, treated gas & put away. I will change oil, chain case oil,hyfax stuff like that in Fall this year usually do that in Spring but too busy now with other stuff & warm weather. 4s gas & go sleds in my experience.:)
 
L

lvr1000

New member
Got 3 1100 kitties- 07 with close to 9000miles (wife's), 09 turbo with 8000 miles (zero this season) and '10 turbo on steriods 1000 miles. Never fogged but do start about every two months and run until heat exchangers VERY hot. Same plugs and batteries. The cats are known to foul plugs if started frequently and not allowed to get hot.
 
srt20

srt20

Active member
I have a question. If you would fog a 2s, why wouldnt you fog a 4s? Both have cylinder walls that rust.

Just asking. I dont fog anything, and dont start anything over summer either. Got 8700 miles on my 08 2s.
 
D

Deleted member 10829

Guest
I had a 2006 FST and put 12,000 miles on it and never fogged it. Why? The owner's manual said not to. Plus, everything I have read says not to and I think that's being proven by the poll above with 100% so far saying they do not fog.
 
gary_in_neenah

gary_in_neenah

Super Moderator
Staff member
Nope. A dash of Sea Foam & Stabil in the tank while she's idling. Wash & Wax and off to bed for the summer. I do syphon off the remaining gas in the tank and burn that in the lawnmower.
I've found that the fuel injected 4 Stroke is pretty much maintenance free except for the oil & filter change in the spring.
 
T

teamblue

New member
No fogging here on Yamaha 4S, Change oil and filter, add seafoam run until they get hot and then syphon gas out in the spring.
 
G

G

Guest
When spring comes you change the oil in your Yami 4 so it sits through the summer with clean oil in it. You powerwash the snot out of the entire sled and grease every greasable pivot point to get all the moisture out so it doesn't rust during the summer. Then you spray WD 40 on all the aluminum you can see. Then you take the battery out. Then you put dryer sheets all over everything to help keep the mice away. Then you wax the plastic. Then if you don't have anything else to do you loosen the track and support the sled to take the weight off the shocks/springs. Then you say a little prayer and put a cover over the entire sled and leave it alone until October. If you are totally anal and believe everything you read on the internet go ahead and squirt some oil down the cylinder bores. It is not necessary. The engine needs no extra summertime oil. Worked for me since 2003 RX Ton.
 
F

fredster

New member
2007 Rage and 2008 Vector.....no fogging. I try to add seafoam to the gas the last day of riding, or immediately after riding ends if I forget. I added fuel shutoffs to both sleds, so I warm them up, change oil, lube chassis, clean clutches, shut off gas, start up again until the carbs are dry, and put them away. Most years they also get a wash and wax but sometimes this doesn't happen until fall. They sit covered up until early November. I HAVE learned to put the charger on the batteries for a weekend in the summer and again in the fall...otherwise batteries tend to discharge. Might invest in float chargers this year, one less thing I don't have to remember do in the summer.
 
R

raceinsnow

New member
srt20 said:
I have a question. If you would fog a 2s, why wouldnt you fog a 4s? Both have cylinder walls that rust.

Just asking. I dont fog anything, and dont start anything over summer either. Got 8700 miles on my 08 2s.
Click to expand...

Most if not all cylinders are lined with a nikaseal chrome plating that will not rust.
 
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