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confish86
Brick Rider
Joined: 24 Oct 2008
Posts: 47
Location: lancaster PA
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 Posted: Wed Nov 05, 2008 10:46 am Post subject: |
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| RobWheatley wrote: | My 99 LT is very noisy when cold, idle is a bit rough when its first started for a few mins, then when it warmed up it smothes out and the noise goes, it is very much like a hard knock sounding like the ends have failed but bring the revs up a bit more and it goes.
Think its either the output shaft to crank gears or the clutch assembly but hey its going to stay like it, just turn the music up a bit more till she is warm.
Rob |
This does it cold or warm, as he rode the bike to where i was (it took 45min to get to me) so the bike was warm. As you have to bring the rpm`s above 2,000 to start to hear it go away , but then again the rest of the bike gets louder so it could just be muffled by other sounds. He was suposed to have it at a shop by now , but havn`t heard from him yet , so we`ll see. I know if i do buy it it`ll have to be cheap enough to warrent having to take the engine out to investagate what this noise is. I love a good challenge & not afraid to get down & dirty on any motorcycle engine. |
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DetroitDan
Mad Brick Rider
Joined: 17 Feb 2007
Posts: 110
Location: Taylor, MI
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| Posted: Wed Nov 05, 2008 11:30 pm Post subject: |
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If you find what it is, please let me know.
In threads from several months ago, I asked about this low-speed knock. Ithoght it was wrist pin or rod. I put an oil pressure gauge on it. It doesn't look like a bearing. Since then, I've put on 13k miles; quite a bit of it at very high speeds.
Nothing has broken - still makes the noise.
Never above 2k rpm.
_________________
1973 CB350F / 1977 R100/7 / 1991 DR650S / 1995 K1100RS
"No man in the wrong can stand up against a fellow that’s in the right and keeps on a-comin’” Capt. Bill McDonald (1852-1918) |
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RobWheatley
Flying Brick Rider
Joined: 06 Jun 2008
Posts: 261
Location: Chatham, Kent. UK
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| Posted: Thu Nov 06, 2008 6:50 am Post subject: |
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Mine does still make noise when its warm but just not as loud, it is common on the K's, my last RS did it just not as loud.
It could even be rough running causing the crank to be speeding up & slowing down until the revs get past 2000.
When was the last service, plugs & throttle body sync???
Im going to have a look at mine soon, she is due a service and think most of the noise is because of rough running, the engine is not as smooth as the RS was.
Rob
_________________
1999 K1100LTIC Smooth and Quiet  Cruise, BFD & HID
1996 K1100RS. dead but not forgotten.
Last edited by RobWheatley on Thu Nov 06, 2008 8:53 am; edited 1 time in total |
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SugarHillCTD
Site Admin
Joined: 10 Oct 2007
Posts: 4238
Location: Now in Eastern Pennsylvania
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| Posted: Thu Nov 06, 2008 7:56 am Post subject: |
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| Off the grid wrote: | | Quote: | jr'sbmw
Joined: 04 Nov 2008
Posts: 1
Location: Fl
New postPosted: Wed Nov 05, 2008 12:04 am Post subject: Reply with quote
My 1997 K1100LT is also noisy below 1000 rpm idle. It was that way when I purchased it 6 yrs. ago with 23,000 miles and still that way with 80,000. For me, doing a throttle syc helped smooth out the engine at idle and reduce the noise. |
Whoa whoa hang on there a sec.
This is your FIRST post?
Welcome!  |
Hey, OTG, good pick up on a first post.
jr'sbmw- WELCOME to the nut house
Good info on bricks here. Got a picture of your ride?
John
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John & Cathy
'92 K100RS4V Pearl White SOLD
'04 K1200GT
IBA Several-SS1k, BBG, 50CC NYC to S.F. |
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tibbe
Flying Brick Rider
Joined: 14 Jul 2003
Posts: 190
Location: Lulea Sweden
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| Posted: Fri Nov 14, 2008 5:25 pm Post subject: |
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Don't know if it helps but my K11 runned a lot smoother and less knocking after renowating rubber tubes at inlet and adjusting the throttles se:
http://www.k11og.org/forum/viewtopic.php?t=5261 |
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MadStu
Joined: 12 Nov 2008
Posts: 22
Location: Brighton, UK
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| Posted: Fri Dec 05, 2008 4:18 pm Post subject: Exact same problem |
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Hi guys,
I've got the exact same problem. With a '94 K1100LT, I bought it a few weeks ago, rode about 1500 miles, it was sweet! Smooth and quiet. Then the other day it started this knocking.
And just as confish86 has described, it happens when the engine is cold or hot, whether the clutch is in or out, but seems to go away when riding above 2000 rpm or so.
To me, the knock also sounds louder when the engine is hot.
Also, I have noticed a little backfiring every now and again, at least I think it is, very quietly though and only around 4 times or so a day (I ride about 100 miles per day).
On another forum I was told this:
| Quote: | | Possible injector knock???? They have been known to make noise at idle. |
I asked for more information but have not received a reply. Any help or tips appreciated
Thanks!
Stu 
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1994 K1100LT |
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tibbe
Flying Brick Rider
Joined: 14 Jul 2003
Posts: 190
Location: Lulea Sweden
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| Posted: Fri Dec 05, 2008 5:11 pm Post subject: |
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read some years ago that the injetors are the same as in tha car 520 / 320 with M50 engine.
Some help could be to fill some injector cleaning in the tank.
Others are to use ultrasound bath or what it's called in english(-us) |
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Scott_Anderson
Site Admin
Joined: 05 Sep 2006
Posts: 3122
Location: Central Iowa, USA
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| Posted: Fri Dec 05, 2008 8:10 pm Post subject: |
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Welcome MadStu,
Got any pics of your steed.
How many miles, is it sounding like it's coming from the front or back, or either side?
Possibly dry/broken alternator rubbers, but they can tend to sound like a bag of rocks though.
_________________
Ride safe.
1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold) |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Fri Dec 05, 2008 9:02 pm Post subject: |
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_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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Mystic Red
Flying Brick Rider
Joined: 28 Mar 2005
Posts: 2330
Location: Twin Lakes Idaho
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| Posted: Fri Dec 05, 2008 9:13 pm Post subject: |
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+1! It just doesn't sound like any other engine.
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Scott Hespelt, '94 K11LT
K11 OG #466 |
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Scott_Anderson
Site Admin
Joined: 05 Sep 2006
Posts: 3122
Location: Central Iowa, USA
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| Posted: Sat Dec 06, 2008 12:14 am Post subject: |
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Or a good MP3 player.
After riding Johnny's new RS last month I can appreciate why all you RS riders out there wear them ear plugs! 
I guess I have been spoiled with bikes with a decent wind screen.
_________________
Ride safe.
1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold) |
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owrstrich
Flying Brick Rider
Joined: 29 Oct 2006
Posts: 2566
Location: CheezConsin
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| Posted: Sat Dec 06, 2008 1:18 am Post subject: |
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k11og = whiners and geezers and posers and all...
l t riders = whining geezers...
any questions...
j o
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yeeeeeehaaaaaaa... |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Sat Dec 06, 2008 2:16 am Post subject: |
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| Flying Duck wrote: |
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After riding with JO several times, I've dscovered that this is the most valuable product you can have when stopped.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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owrstrich
Flying Brick Rider
Joined: 29 Oct 2006
Posts: 2566
Location: CheezConsin
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| Posted: Sat Dec 06, 2008 10:55 am Post subject: |
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rubber bullets never hurt me...
j o
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yeeeeeehaaaaaaa... |
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MadStu
Joined: 12 Nov 2008
Posts: 22
Location: Brighton, UK
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| Posted: Sat Dec 06, 2008 11:00 am Post subject: |
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| Scott_Anderson wrote: | Welcome MadStu,
Got any pics of your steed.
How many miles, is it sounding like it's coming from the front or back, or either side?
Possibly dry/broken alternator rubbers, but they can tend to sound like a bag of rocks though. |
I've not got any pics yet, it's in Mystic red though and has got a big cube on the back for carrying blood in.
It's done about 47,000 miles and I've tended to think the knock is coming from the left side of the engine, but I'll let you know later after I run it a bit.
Doesn't really sound like a bag of rocks. Might be best if I video it running and stick it on YouTube or something, so you can hear it.
Cheers
_________________
1994 K1100LT |
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RobWheatley
Flying Brick Rider
Joined: 06 Jun 2008
Posts: 261
Location: Chatham, Kent. UK
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| Posted: Sat Dec 06, 2008 11:08 am Post subject: |
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MadStu
If your ever up around the medway area let me know and you can listen to mine, will be the same noise, sounds worse on my LT due to the fairing directing it back.
Rob
_________________
1999 K1100LTIC Smooth and Quiet Cruise, BFD & HID
1996 K1100RS. dead but not forgotten. |
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MadStu
Joined: 12 Nov 2008
Posts: 22
Location: Brighton, UK
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| Posted: Sat Dec 06, 2008 11:24 am Post subject: |
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| RobWheatley wrote: | MadStu
If your ever up around the medway area let me know and you can listen to mine, will be the same noise, sounds worse on my LT due to the fairing directing it back.
Rob |
Ah, cool.
I keep reading that I shouldn't worry about it, lol, but I'm getting some stick from my colleagues about it sounding like a tractor 
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1994 K1100LT |
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MadStu
Joined: 12 Nov 2008
Posts: 22
Location: Brighton, UK
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| Posted: Sun Dec 07, 2008 2:40 pm Post subject: Answer found |
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OK, I found the answer for me anyway - There was a blanking cap missing. Visit here for details: http://redsoket.com/index.php?showtopic=60&st=45
Maybe it'll help the original thread starter.
Thanks all
_________________
1994 K1100LT |
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RobWheatley
Flying Brick Rider
Joined: 06 Jun 2008
Posts: 261
Location: Chatham, Kent. UK
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| Posted: Mon Dec 08, 2008 5:07 pm Post subject: |
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Hi MadStu
Im guessing you bought Choppers LT then, good to see your populating there here forums, Glad you have your problem sorted.
Rob
_________________
1999 K1100LTIC Smooth and Quiet Cruise, BFD & HID
1996 K1100RS. dead but not forgotten. |
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chopper_harris
Flying Brick Rider
Joined: 28 Dec 2007
Posts: 232
Location: Nr Wigan, UK
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| Posted: Tue Dec 09, 2008 10:23 am Post subject: |
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Yes, and what a wise purchase he made - a great bike, and unlimited post sales supoort from yours truly.
Currently negotiating on a 1984 K100 RS - a very early one with good provenance.
When I get bored with the R1150 RT, I'll definitely buy another K11LT - just need to figure out how to convert the g/box for an overdrive 5th
(Oh dear, let's not go down that thread again )
_________________
C1 200 (2001)
R100 RS (1990)
NSU Quickly N (1964)
Honda 400/4 F1 (1977)
MotoGuzzi 1000C (1978)
Suzuki TL 1000 R (1999)
Kawasaki KLV1000 (2005)
K12R Sport (2007) - Wifeys |
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