- Sep 10, 2008
- Eastern Washington State
- Ferguson TO35, Branson 4720CH
Perhaps I am wrong, but I thought a diesel most always operates with excess air (or O2) as the intake has no restrictions. You control the rpms or power with the "throttle" by giving it more fuel in the fuel injection charge rather than more air (like a gas engine). My guess is that this elevation change has nothing to do with starting but it is more temperature related. However Turbo chargers do help diesels at elevation more than at sea level as they can out of excess air at the lower atmospheric pressure and O2 levels under heavy engine load conditions.