Reaching out to you rocky mountain riders with a question. My 08 KLR is stock jetting and runs nicely in my home terrain which doesn't exceed 4000 feet. Do I need to change from stock jetting for the altitudes in CO? If so, what is recommended? I am riding the COBDR later this summer? Thanks!!
As suggested by Damocles, the stone stock KLR650 is perfectly capable of riding the COBDR or Ouray/Silverton/Telluride area with stone stock jetting. Even at California Pass, elevation of 13,600 I think I remember.
The one thing that I will suggest is, Turn-Up your Idle Speed to 1300 +or- 1000 with fully warm engine. It will start better. And it can be Totally Normal to need to use Choke after just a 20-30 minute lunch break in the cool mountain air!
One more note, Do Not just tap and release the starter button!
Crank IT! The system is not like a car, it will not 'grind the gear'.
If you attempt a warm/hot start and it doesn't immediately start, gently open the throttle a 'smidgeon', while still cranking. This procedure increases the 'cranking engine Compression' and slightly 'Leans' the low speed mixture.
So I now count 3 very minor 'tips', with Zero wrenches.
Tip #4 involves wrenches,
Check your Valve Tappet Clearance and set to the Wider end of Specs if you haven't all ready done so! Especially the RH Exhaust Valve. Why? To ensure the most Cranking Compression! And is just 'Good Maintenance'.