Altitude - Kawasaki KLR 650 Forum
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post #1 of 9 Old 08-25-2008, 02:37 PM Thread Starter
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Altitude

So I have an 08 KLR 650 and bought in in Halifax. It worked great there but im in Alberta now and it is putting black carbon on my rear fender and hard to start and getting poor milage. I believe this is because of the change of altitiude. anyone know how to adjust the carb and know if this is the problem or not. HELP
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post #2 of 9 Old 08-25-2008, 03:05 PM
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How high are you? Altitudewise, of course.
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post #3 of 9 Old 08-25-2008, 03:16 PM
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It sounds like you are now running extremely rich. You may have to drop a main jet size.
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post #4 of 9 Old 08-25-2008, 03:31 PM Thread Starter
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We are 2400ft ish in Alberta, I bought it in Halifax, Sea level. I talked to the local dealer and they dont think it will make a difference. I just put 1000km on it this weekend and most of my speeds were around 130kmph or 70mph so i was not being easy on her but that where she really started blowing carbon out on it. my girlfriend was riding behind me and said it also smells real bad. I run a [email protected] filter in it so she is getting tons of air and it is clean.
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post #5 of 9 Old 08-25-2008, 03:48 PM
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How is your oil level doing? If your burning a bit of oil it might cause some of the carbon. Yeah 2400 feet shouldn't make a difference, and normally you have to go up a jet size when going up in altitude.
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post #6 of 9 Old 08-25-2008, 03:51 PM Thread Starter
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Well it does use oil, about 1 ltr between every oilchange. but then there is still the problem of carbon on the fender and hard starting
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post #7 of 9 Old 08-25-2008, 04:03 PM
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I tend to think 2400 ft would make some difference, particularly if it was already a little rich and maybe a little oil blow-by included.

Is your K&N over-oiled, by any chance? And it's oiled with the correct filter oil and not motor oil?

You might try dropping a jet size anyway. Sounds like it's so rich now you wouldn't have to worry about being too lean even at sea level.

You also sound like a prime candidate for the PCV mod.

Hard starting - plug fouling from rich/oily mixture? Low compression due stuck/broken ring or???

(I know 2400ft makes a difference when I leave sea level (where I live), go somewhere with a little altitude and take off on a hike!!!!!! of course the number of birthdays and a few extra pounds have some effect too)

Last edited by BIGIRON; 08-25-2008 at 04:07 PM.
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post #8 of 9 Old 08-25-2008, 04:05 PM
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Sometimes opening up the idle mixture screw makes a big difference in hard starting, altho the 08's seem to have some issues with hard starts. It doesn't take too long to do the screw mod, and the fact you installed a K&N filter, means your running even leaner now than you were to begin with. If you add more air, you have to add more fuel to equal things out. Opening up the idle mixture screw is going to allow a bit more fuel in on the idle circuit, that is from idle up to 3000k RPM, and should help with the starting issues and also any surging you might have in some of the rpm ranges.
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post #9 of 9 Old 08-25-2008, 04:49 PM Thread Starter
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Sweet ill look at these options so far and give them a go. Thanks Ive been waitin for a reason to tear into this bike.
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