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Old 01-25-2019, 09:30 PM   #1 (permalink)
Join Date: Aug 2018
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Default 2014 iqr 600

So I trail ride my sled ,I have the secondary heat exchanger, timing on g ,premix and 420 mains.I rode today for about an hr 25 degrees or so it ran great and then a bogging, ran up a road seemed to clear up then again the bogging. I've heard to lean use 440 mains ,it almost seems like something is getting hot .any ideas
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Old 02-19-2019, 09:21 AM   #2 (permalink)
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I have ran 420's down to 20 below F in a 2015 IQR, so I don't think you are too lean, but every sled is a little different. I am now at 410's and last night it was 0 and I was fine...this is < 1000 feet elevation all trail riding, 91 non ethanol, timing on G, oil injected, but I know I won't go any leaner.

Last edited by R254; 02-19-2019 at 09:24 AM.
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Old 02-19-2019, 05:16 PM   #3 (permalink)
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Join Date: Dec 2013
Posts: 175
Current Sled(s): 2013 Indy 600
Previous Sled(s): 99 xc 700. 02 pro x 600. Edge xcr 800. Iqr 600
Age: 33
Riding Since: 98

I wouldn’t think you’re to lean. Check plugs or piston wash to be sure. I would check power valves or broken clutch spring.
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