Need Some Expertise

[Bigblue1]

I was up in Quebec this past weekend....yes in the extreme cold. -26 the night we arrived. Next morning all sleds started fine. Did have a problem for the first time sine I have owned it. I know its been discussed, but I'm trying to eliminate going down a rabbit hole. I have ridden in extreme cold temps before with no issues. Obviously not like this but close. As we started the morning after a long warm up, sled ran fine but when I went to go past 65mph, 1/3 throttle I got some back fire and it pulled power fast. I have a Max 17 tune but have run it for five years with no incident, always cautious with gas and adding octane boost.

Being very cautious given the temps, I backed out immediately, but when I came close again you could feel it was on the edge. The only thing I could think of was I had to loosen the charge tubes to get top shock bolt out to rebuild shocks and though I thought I checked, may have not secured the hoses all the way and was getting some pressure leak or cold air infiltration. No codes came up. I rode it that way fine. Next day started off frigid but it was in a warm garage all night. Temps warmed up to 0 by afternoon so I tried again and same thing. Sled runs great up to that point. I will be looking it over tonight to see if the tubes are on well and tight but any thoughts on this?

 

[Fords4life]

Moisture in small lines to sensors in nose of sled would be a good place to start looking

 

[74Nitro]

Do you have the dash flashed?
What does boost say? Reading accurate?

 

[Bigblue1]

Well, not empty headed mechanic after all. The hose that connects to the map senser was disconnected where this silver ring was held on by a nipple off the sensor and an O ring. Brilliant.

Extreme cold must have shrunk O ring.

 

[Bigblue1]

Everything was dry otherwise. I’ll be carrying a spare from now on

 

[KnappAttack]

Well, not empty headed mechanic after all. The hose that connects to the map senser was disconnected where this silver ring was held on by a nipple off the sensor and an O ring. Brilliant.

Extreme cold must have shrunk O ring.

Do yourself a favor and throw that old 3 bar in the garbage and use the new one without the Alum. nipple and o-ring! Those things should never have been sold by GAP IMO.

 

[Bigblue1]

Do yourself a favor and throw that old 3 bar in the garbage and use the new one without the Alum. nipple and o-ring! Those things should never have been sold by GAP IMO.

Agreed.