2010 M8 missing anti freeze, Fouling plugs.

Destroyer

Active VIP Member
Joined
Dec 8, 2010
Messages
385
Reaction score
1,031
Location
Sk
Website
www.youtube.com
I tried taking pictures of the plugs but they didn't turn out at all. So I'll try and explain the symptoms and what the plugs look like.

-It sometimes gets a low end bog after I let it idle. It cleans up after you get moving.
-the trail in was slow and rough. It started bogging really bad on the trail like a fouled plug or blown piston. You couldn't throttle out of it. We took the pipe off. In the y pipe the pto side was white, mag side was normal.
-Pulled the plugs. PTO side was white and dry/Mag side was wet and black. Carbon was partialy "washed" off the plugs
-Put new plugs and isopropel in and the sled ran fine for the most part, but it did start to bog really bad once for at least 30 seconds. I was in a sidehill that I needed to pull. I figured it fouled plugs again. But i just drove it and it cleared up. Makes me wonder if it would of cleared up on the trail before?

-I now have it at home in the garage. Y-pipe looks normal on both sides.
-compression on my cheap guage is 145 pto, 150 mag.
-pto upper plug is medium brown and dry, lower plug is pretty dark brown but still dry
-Mag side is really dark and a little wet. Lower plug is more wet than the top. Has a bit of carbon "washed" off
-All of the plugs show a bit of carbon build up.
-Checked the oil ratio a few times. 43:1

- I noticed anti-freeze leaking on day one of the trip but never did see it leaking again. I figured it must of just leaked when I tipped it over to see if I hit any rocks or trees.
-The anti freeze is at the bottom of the jug after every ride. There's no sign of it leaking. TodayI tipped the sled on the side to inspect underneath. When I put it back on it's ski's the level was back up in the bottle. Maybe it was just an air lock? No sign of it leaking since the first day. But I have added about half a litre on two separate occasions.
 

Catman10

Drinking the Doolaid
Joined
Sep 30, 2008
Messages
791
Reaction score
2,298
Location
Red Deer Alberta
If you are going through antifreeze with no indication of it leaking on the ground then hopefully you have a bad o-ring which is not a big deal to change, pull the head and replace all o-rings since they are cheap. If the problem still occours then you have to wonder if you have a crack in the skirt and it is allowing antifreeze in that way. Traditionally if you are burning the green stuff the plugs are much cleaner and wet with a definate miss on one cylinder. When you pull it apart get a good light in there and inspect everything. I wonder about the antifreeze you see at the bottom of the jug, that confuses me, is it on the outside laying on the cases? If so then you may want to review the base gasket. I dont know, it is hard to diagnose without seeing it sometimes but when you look at it further the answers should come to you and there are a lot of good guys on here that have great suggestions, good luck!
 

firecatab

Active VIP Member
Joined
Nov 14, 2006
Messages
208
Reaction score
46
Location
Carstairs Alberta
Don't really have an answer for you but when you find out what it is let me know!! I have an 07 M1000 that did this all last year and I have replaced base gaskets, water pump seal, o rings 3 times now, just put a new head on it (because the other was a little over 2thou) so wanted to rule that out, I rode it on the weekend and after giving it a good run in the powder checked to see if the bottle was empty and no it was not so fixed it was, that was until I ran down the trail pushing her pretty hard and when I got back home and into the garage I checked and the bottle is again empty. Mystery I guess so, very frustrating,

Catman10 I will also use your info and when I pull it apart again I will check the cylinder for any types of cracks.
 

TROLLCAT

Active VIP Member
Joined
Nov 23, 2010
Messages
71,162
Reaction score
39,109
Location
Dease Lake BC
A pressure test the cooling system , 10 to 15 psi wait the leak will appear ,I have seen a cylinder leak right threw the side of bore casting flaw.
 

Destroyer

Active VIP Member
Joined
Dec 8, 2010
Messages
385
Reaction score
1,031
Location
Sk
Website
www.youtube.com
When I said jug I meant coolant bottle...sorry. How can I pressure up the system. My dealer said they don't have the special 'tool' to do it. I'm guessing it's just a cap for the coolant bottle. I would definetly say the mag side looks wet and the plugs look "washed" off. The coolant may be getting in the mag side? I can't smell it burning or see any white smoke? I wonder why when it bogged and I shut it off and checked the plugs that the pto side was so white and the mag side really wet and "washed" looking? Would the efi try and compensate for the burning condition of the antifreeze infested cylinder?
 

TROLLCAT

Active VIP Member
Joined
Nov 23, 2010
Messages
71,162
Reaction score
39,109
Location
Dease Lake BC
siphon coolant bottle out disconnect hoses from bottle use a 1'' aluminum pipe with a hole drilled & tapt to fit pressure pump this is little bit of messing around connect hoses to pipe applie pressure 10-15 psi and wait. You may have to take reeds out to see inside of cases, but first check inside tunnel all hose clamps do the easy stuff first watch gauge if it drop you are moving antifreeze both my index fingers hurt from typing this LOLOLOL

hope this helps
 

TROLLCAT

Active VIP Member
Joined
Nov 23, 2010
Messages
71,162
Reaction score
39,109
Location
Dease Lake BC
no EFI would not compensate for antifreeze sorry for not reading the complete message
 
Top Bottom