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I picked up my bike on Friday and put the 600 miles on it by Saturday. I love the bike but I kept hearing engine noise that sounds almost like pinging. It is like a rattling noise upon acceleration from start.Does anyone know what this is and if it is common with K bikes? My bike is an '09. By the way, I did put 93 octane in the bike. Has anyone had this issue before?

Thanks,
Ken
 

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ken6217 said:
I picked up my bike on Friday and put the 600 miles on it by Saturday. I love the bike but I kept hearing engine noise that sounds almost like pinging. It is like a rattling noise upon acceleration from start.Does anyone know what this is and if it is common with K bikes? My bike is an '09. By the way, I did put 93 octane in the bike. Has anyone had this issue before?

Thanks,
Ken
EDIT Never mind re read and saw from start or off idle. "They all do that" :) Seriously it sounds like the alternator gear set that maybe set on the loose side. Mine goes away at 1200 RPM but at idle she will make some noise. Seems there a lot on the loose side and from my years on here the advice is not to worry about it.

The shifting on the LT from start for me at least was an acquired taste also. You need to get it up to 1200 RPM or so, preload the shifter, and flip the clutch quickly. Probably not an accurate description, but from a oil bath to a dry clutch was a learning curve for me.

Remember this bike absolutely thrives on RPM.

Remember the bikes take a lot longer to break in because of the Nikasil (sp) cylinders.
 

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I seemed to notice it up until about 4000 rpm. I couldn't take it past that since I was going with what the manual says for the first 600 miles. I got the feeling though it was dissapearing once I got near 400 rpm. By the way, what is the engine whirring noise? I noticed on the demo bike but it seemed more evident on mine.

Thanks,
Ken
 

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The engines on these bikes make a lot of strange noises it seems, some more than others. Had mine nearly a year now and still not used to the sound, adding a Remus exhaust gave me something else to listen to and help drown out the rattly, clunky noises. ;)
 

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LT's do make some strange noises at low rpm's and when not under a load, you will get use to that. They sound and feel the best between 4K and 8K!
 

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ken6217 said:
I picked up my bike on Friday and put the 600 miles on it by Saturday. I love the bike but I kept hearing engine noise that sounds almost like pinging. It is like a rattling noise upon acceleration from start.Does anyone know what this is and if it is common with K bikes? My bike is an '09. By the way, I did put 93 octane in the bike. Has anyone had this issue before?

Thanks,
Ken
If it's under warranty, take it back to the dealer and have them diagnose it. I might try another brand of 93 octane if the dealer doesn't find anything; what has the temp been in your area?
 

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I am glad someone else is asking this question. I have an '05 that I just got about a month (or 4K miles, depends how you look at it) ago, and I have been a little concerned from time to time. At idle with the clutch out you can hear a pretty good amount of noise, but most of it goes away when you pull in the clutch and it's a lot quieter after it gets up to temp. What really concerned me was the sound under acceleration: it sounds semi-clattery......but almost in a plastic kind of way if that makes any sense. Feedback from the engine though is dead smooth, it feels super strong and tight....as a matter of fact, the only vibration I can feel anytime is at idle....and it's just enough to make me LOVE how the engine feels. My wife can't hear it, she is too busy enjoying the ride and digging the exhaust note, which I love as well. I bought the bike from a dealer (BMW exclusive) and they said the noise is just 'The Nature of The Beast'......a K-Bike Thing. Also, I honestly haven't taken the motor above 4500 RPM yet, I figured I would be doing that eventually one day, especially since my son just got a brand new R6. So.....my question is this: is everyone else's motor noisy like this? Is this anything to worry about?

Thanks,
Tim
 

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Discussion Starter #8
t61vance said:
I am glad someone else is asking this question. I have an '05 that I just got about a month (or 4K miles, depends how you look at it) ago, and I have been a little concerned from time to time. At idle with the clutch out you can hear a pretty good amount of noise, but most of it goes away when you pull in the clutch and it's a lot quieter after it gets up to temp. What really concerned me was the sound under acceleration: it sounds semi-clattery......but almost in a plastic kind of way if that makes any sense. Feedback from the engine though is dead smooth, it feels super strong and tight....as a matter of fact, the only vibration I can feel anytime is at idle....and it's just enough to make me LOVE how the engine feels. My wife can't hear it, she is too busy enjoying the ride and digging the exhaust note, which I love as well. I bought the bike from a dealer (BMW exclusive) and they said the noise is just 'The Nature of The Beast'......a K-Bike Thing. Also, I honestly haven't taken the motor above 4500 RPM yet, I figured I would be doing that eventually one day, especially since my son just got a brand new R6. So.....my question is this: is everyone else's motor noisy like this? Is this anything to worry about?

Thanks,
Tim
Tim,
A couple of comments based on my limited knowledge. I have not heard the clutch issue on my bike but I have a a dry clutch on my Ducati and it is noisy. If course on a Duc that is part of the charm.

Get that bike over 4500 RPM pronto!! I came from having Harley's where I would live at 3000 rpm. Different animal here. I posted on this forum right after I test rode the LT that it was really sluggish. I had not taken it over 4000 rpm. I went back to the dealer and rode it again where I pretty much stayed in the 4000 - 5000 range and what a difference.

The other noises that you and I are hearing seem to be pretty much normal from what I am reading. Despite the noise the engine seems smooth. I may have gotten a bad tank of gas or maybe it is something with the alternator gears from what I have read. I dont understand about the alternator so i need to get a little more educated before I talk to the dealer about it.
Ken
 

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Thanks. I had owned one of the first H-D Twin Cams right after my wife requested something more comfortable for her than my '90 R100 GS/PD. We didn't get along with the breakdown prone H-D very well and switched to a smooth appliance-like 'Wing for a few years while secretly lusting for an LT. Both wife and I are VERY happy with the LT. While neither of us are tiny any more (not Lard-O's either) the much maligned seat fits us GREAT. A million times better than the H-D or Wing. Maybe it's just that our butts never adapted to that 'bucket seat' thing that everyone seems to like?
In any event, I think I have resolved to have faith in my dealer's opinion as well as some others I have read in the forums and just ride the dickens out of it. Logically, if the dealer just performed the 18K service like they did on mine, and their technicians say it's strong and tight, I should probably not fret. Even though we have already run a 600 mile day or two already, my wife and I are trying to schedule a weekend getaway to Deals Gap for our first official 'trip'. I think that would be a good opportunity to wring it out and have some fun.
 
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