2016 and 2017 pro s 800ís with coolant leak - HCS Snowmobile Forums

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Old 11-26-2017, 10:18 AM   #1 (permalink)
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Default 2016 and 2017 pro s 800ís with coolant leak

I bought both sleds brand new. 16 has 1600 miles on it and leaked 2 tablespoons of coolant in trailer last summer, I took it to the dealer and they couldnít find a leak. I put a clamp on one of the head bleed off lines and thought it was fixed but just looked in trailer and itís still leaking. Took the brand new 17 out today and saw a little coolant under it, and canít find coolant/wetness anywhere!!
Any suggestions would be appreciated as Iím getting frustrated with this! Love the sleds otherwise
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Old 11-26-2017, 12:18 PM   #2 (permalink)
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Could of just had an air bubble and worked it's way out the overflow but I'm not know expert, maybe Rick can answer, hope it's not a head gasket issue
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Old 11-26-2017, 12:31 PM   #3 (permalink)
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First, is the coolant bottle showing low?

Second, if not, then might be from previous bleeding done at dealer.

Third, if it is, then there can be several potential places for leaks.
1. T-stat housing area
2. Exhaust valve area hoses.
3. Waterpump hoses/clamps in front down low.
4. Heat exchanger hoses behind engine.
5. Throttle body entry and exit hoses.

Any air bubbles will not normally cause leaks. Just possible overheating which can cause leaks from the bottle overflow hose.
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Old 11-26-2017, 08:28 PM   #4 (permalink)
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Thanks for the ideas, the 16 would leave a little spot where parked last winter but the coolant was never low and level in 17 is fine as well. Neither leak a lot but I would prefer no leaks, just wondering how common coolant leaks are in these sleds? Thanks for all comments and ideas.
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Old 11-27-2017, 07:05 AM   #5 (permalink)
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Quote:
Originally Posted by Stryfast View Post
Thanks for the ideas, the 16 would leave a little spot where parked last winter but the coolant was never low and level in 17 is fine as well. Neither leak a lot but I would prefer no leaks, just wondering how common coolant leaks are in these sleds? Thanks for all comments and ideas.
Most of my riding buddies have various year AXYS 800 sleds. No problems with coolant leaks at all.

Make sure that the caps on the coolant bottles are all the way tight. Check bleeder screw on top of thermostat housing. Do not overfill bottle.

Make sure coolant system is properly bled of all air. This requires tipping sled at a 45 degree angle on left side.
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Old 11-27-2017, 07:10 AM   #6 (permalink)
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pressurize cooling system or have dealer do it and look for leak we want no leaks in cooling system
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Old 11-27-2017, 09:17 AM   #7 (permalink)
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Originally Posted by trottlejo View Post
pressurize cooling system or have dealer do it and look for leak we want no leaks in cooling system
I improvised when I had to do this a few years back, used a tire inflater with a pressure gauge, taped it up with vulc to seal against the bottle.. Tapped the trigger gently a few times and held it in place a few minutes to make sure pressure didn't drop. Could easily have zip-tied it to the bottle to do ocular inspecition for leaks..
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Old 11-27-2017, 10:06 AM   #8 (permalink)
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If all else fails, dye the coolent system. After you notice the leak, take into a dark shop and blacklight it. You will find the leak
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Old 11-27-2017, 02:05 PM   #9 (permalink)
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Quote:
Originally Posted by Punkkone View Post
I improvised when I had to do this a few years back, used a tire inflater with a pressure gauge, taped it up with vulc to seal against the bottle.. Tapped the trigger gently a few times and held it in place a few minutes to make sure pressure didn't drop. Could easily have zip-tied it to the bottle to do ocular inspecition for leaks..
careful with this only need 12 psi and no mess so you can leave pressurized for the amount of time it takes for leak to occur
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Old 12-01-2017, 11:35 AM   #10 (permalink)
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Quote:
Originally Posted by trottlejo View Post
careful with this only need 12 psi and no mess so you can leave pressurized for the amount of time it takes for leak to occur
Yeah, IMO that kind of speaks for it self, if someone does this and shoots 30PSI into the system I take no responsibility for cracked bottles, sudden disconnection of hoses or blown o-rings!
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