So I used to really like my 2007 Summit 600 SDI!
At the trailhead last weekend it was 20 below and it fouled plugs and took 30 minutes of screwing around to get it started. Ran fine once started. Today at home, 25 below, tried to start it, it barely starts to fire and dies. Repeat 20 times. Finally the rope won't retract - you know the routine! Probably pulled 50 times - sweating! This morning I "loosened it up" by pulling slowly on the rope numerous times with the tether unplugged to reduce loading the cylinders with fuel. I'm running semi-synthetic, at least that's what they said they put in my my jug from their bulk barrel.
Anyway, any suggestions with cold starting this machine? Any others have this problem with their 600 SDI? I thought I might do some trapping, but this sled is no good to me as is.