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Top end noise

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Old Oct 17, 2010 | 06:55 PM
  #1  
2007rkjb's Avatar
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Default Top end noise

Have a 2007 RKC with 15,000 mi.
Oil and filter changed every 2,500 with HD synthetic.
All of a sudden the bike is making top end noise
like a bad lifter or something like that.
Has anyone else had this happen ??
Any ideas ??
Bike still runs OK. Oil level is full.

Thanks,

Jake
 
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Old Oct 17, 2010 | 07:05 PM
  #2  
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Originally Posted by 2007rkjb
Have a 2007 RKC with 15,000 mi.
Oil and filter changed every 2,500 with HD synthetic.
All of a sudden the bike is making top end noise
like a bad lifter or something like that.
Has anyone else had this happen ??
Any ideas ??
Bike still runs OK. Oil level is full.

Thanks,

Jake
It very well could be a bad lifter.My mechanic doesn't like to use sythetic for this very reason.He said he had seen problems with lifters using synthetic oils go bad.Synthetic is good oil,but it's thin.I don't like the way the motor sounds when using it;The motor sounds like its going to tear apart!!!
 
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Old Oct 17, 2010 | 07:18 PM
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Change back to a regular 20W-50 and see if it goes away. Bet you will be a happy camper..
 
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Old Oct 17, 2010 | 08:10 PM
  #4  
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head
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i bought my 2006 flhri in march with only 8500 miles on it. previous owner used syn3 in it. i had never heard so many noises in a motor. i switched to harley 20w50 and the noises disappeared...

head
 
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Old Oct 17, 2010 | 09:28 PM
  #5  
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Change out to a good 20w-50 [dino] and let us know how it sounds. I'm willing to bet most of the noise went away.
 
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Old Oct 17, 2010 | 09:31 PM
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Default Sorry, not buying it

I don't think the synthetic is thiner than dino oil. It's still 20-50. I've got just as good oil pressure with full synthetic as I did with dino.
 
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Old Oct 17, 2010 | 09:33 PM
  #7  
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I still want to try Red Line Synthetic. I just heard too many good things about it.
 
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Old Oct 17, 2010 | 09:37 PM
  #8  
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Originally Posted by arealinvestor
It very well could be a bad lifter.My mechanic doesn't like to use sythetic for this very reason.He said he had seen problems with lifters using synthetic oils go bad.Synthetic is good oil,but it's thin.I don't like the way the motor sounds when using it;The motor sounds like its going to tear apart!!!
Got the same advise a couple of years ago and recently as well,I've never used anything but dino,never had a problem.
 
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Old Oct 17, 2010 | 10:15 PM
  #9  
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synthetic is alot more slicker then dino and thats why your motor gets noiser and it is good oil. but if u like quiet then stick to dino. dino is good as long as u change every 2500 to 3000 miles. but you will always hear drive train noise on a harley.
 
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Old Oct 17, 2010 | 11:31 PM
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Subscribed,
jus cause I wanna know why someone would change out full synthetic oil at twenty-five hundred miles. Only if I lived on a heavily traveled dirt road, would I consider it.
 
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