Rear cylinder cooler than the front - Harley Davidson Forums



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Rear cylinder cooler than the front

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Old 09-21-2010, 09:32 PM
Bedore Bedore is offline
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Default Rear cylinder cooler than the front

I noticed today during an extended warmup that the front cylinder was running hotter than the rear cylinder. I couldnt touch the front but could lay my hand on the rear jug with no harm of burning my hand.

I do not have a IR Thermo to really measure temps well once it's been run, but I figured that during warm up they would both at least share similiar temps. Does this indicate a problem? Exhaust leak maybe ?
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Old 09-21-2010, 11:35 PM
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WRAITH WRAITH is offline
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The front cylinder runs lean compared to the rear. A lean cylinder runs hotter than a rich one. It is normal.
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