Quote:
Originally Posted by nachosgrande
Thanks everyone. I currently have a 2013 KLR 650 and a 2012 KLX 250, was debating just using the KLR or selling both and buying something fuel injected for the trip. Living at sea level I was concerned about what might happen in the mountains. The internet is full of info regarding the differences, but I figured this forum was the only place to discuss which is better in the middle of a third world country.
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Both good bikes ... and both are new!  You are spoilt for choice!
You must be in the US or Canada as newer KLX250's (EU) are F.I. USA ones still Carb'd. No matter.
Modern Carb bikes come jetted VERY LEAN from the factory. They are good at altitude. Most can go up to round 10,000 ft. before being badly affected. They will lose power (just as ALL bikes including EFI bikes will)
Over 10k they will begin to run too rich, rough idle, hard starting ... and even weaker running.
Easy solution is to open up air box. MORE AIR! Of course you can re-jet too but that's more work/knowledge. One addition I would add before re-jetting would be an extended Fuel-Air pilot adjust screw that is accessible. Very handy as you proceed higher.
Most Carb'd bikes have a Fuel-Air Pilot screw, most hard to get to on bottom of Carb. With an EXTENDED fuel screw, you can make adjustments in seconds ... from the seat of your bike.
Use fuel filters, keep air filter clean, change oil using GOOD oil, and you'll go easily 85K miles on the KLR, 40K miles on the KLX.
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