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TonySch
Joined: 19 Jul 2009 Posts: 3 Location: DERBY
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Posted: Wed Aug 18, 2010 8:00 am Post subject: Clacking Engine on tick-over |
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My 1993 K1100rs is making what I can only decribe as a clacking sound
(if you think clack clack clack clack...that'd be pretty close) on tick-over...about twice a second...in drive, it dissapears...and speeding the engine up, it dissapears, (but seems occasionaly to catch), normal driving, it's not there.......has anyone any suggestions/advice/come across this before?...
I asked at the local BMW dealers in Derbyshire..Pidcocks....they said (don't laugh!) 'they all do that'............which I don't believe for a second.......
thanks |
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SugarHillCTD Site Admin

Joined: 10 Oct 2007 Posts: 4238 Location: Now in Eastern Pennsylvania
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Posted: Wed Aug 18, 2010 12:42 pm Post subject: |
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The K1100RS I had would do it too. Only in neutral, clutch lever out.
If I pulled the lever in, it would stop.
John _________________ John & Cathy
'92 K100RS4V Pearl White SOLD
'04 K1200GT
IBA Several-SS1k, BBG, 50CC NYC to S.F. |
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Flying Duck PsyKotic Waterfowl

Joined: 27 Jan 2005 Posts: 10102 Location: Bumf***, WA
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Posted: Wed Aug 18, 2010 12:54 pm Post subject: Re: Clacking Engine on tick-over |
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| TonySch wrote: | I asked at the local BMW dealers in Derbyshire..Pidcocks....they said (don't laugh!) 'they all do that'............which I don't believe for a second.......
thanks |
For once, a dealer is being honest.  _________________ 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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dwerbil Flying Brick Rider

Joined: 18 Jun 2010 Posts: 224 Location: Round Rock, Tx
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Posted: Wed Aug 18, 2010 1:07 pm Post subject: |
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| SugarHillCTD wrote: | The K1100RS I had would do it too. Only in neutral, clutch lever out.
If I pulled the lever in, it would stop.
John |
I know my older airheads would do this exact thing, when at operating temperature. The clacking sound, when in neutral with clutch lever out, comes from a 'relaxed' transmission...bit of chatter noise came from no tension on the gears. Maybe it's the same with K bikes. _________________
93 K1100RS ~ 2004 R1150RT ~ 84 RS ~ 78 R100/7 ~ 65 R60/2
Click for pics
Randy at Round Rock, Texas |
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Flying Duck PsyKotic Waterfowl

Joined: 27 Jan 2005 Posts: 10102 Location: Bumf***, WA
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Posted: Wed Aug 18, 2010 1:31 pm Post subject: |
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On K1100s it's the timing gear up front. _________________ 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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DaveVoorhis Flying Brick Rider

Joined: 22 Mar 2006 Posts: 223 Location: Derbyshire, UK
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Posted: Wed Aug 18, 2010 2:23 pm Post subject: |
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Wouldn't be the alternator driver rubbers that are worn and making noise, would it? _________________ '93 K1100RS
Dave #3 |
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Flying Duck PsyKotic Waterfowl

Joined: 27 Jan 2005 Posts: 10102 Location: Bumf***, WA
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Posted: Wed Aug 18, 2010 2:56 pm Post subject: |
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| DaveVoorhis wrote: | | Wouldn't be the alternator driver rubbers that are worn and making noise, would it? |
That's more rumbly than ticky. _________________ 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: Wed Aug 18, 2010 9:08 pm Post subject: |
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I took mine to the dealer, same noise, same response. "Sounds like a good strong K Bike." _________________ Scott Hespelt, '94 K11LT
K11 OG #466 |
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TonySch
Joined: 19 Jul 2009 Posts: 3 Location: DERBY
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Posted: Thu Aug 19, 2010 12:30 pm Post subject: Clacking engine on tickover |
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Thanks for all the help on this topic.....much appreciated
I'm much easier in my mind now....thought something was about to explode out of the crackcase........
perhaps I'll take a look at the timing chain tensioner over winter, if it's easy to get at....anyone done it?...do you have to dismantle half the engine in the process? |
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Flying Duck PsyKotic Waterfowl

Joined: 27 Jan 2005 Posts: 10102 Location: Bumf***, WA
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Posted: Thu Aug 19, 2010 12:56 pm Post subject: |
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It's more likely the rails than the tensioner. Not that big of a job. _________________ 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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Ragman Mad Brick Rider
Joined: 26 Mar 2008 Posts: 97
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Posted: Wed Aug 25, 2010 11:48 pm Post subject: |
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My bike "Clacked" when I bought it at 18K miles. It now has 48K and is smooth as a babies ass.
Go figure!
Rag _________________ "When injustice becomes law, resistance becomes duty."
~Thomas Jefferson
1995 K1100LT
1980 Hadley Giggleson FLHC |
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granth Mad Brick Rider
Joined: 04 Aug 2010 Posts: 78 Location: Birmingham,England
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Posted: Wed Sep 01, 2010 10:30 pm Post subject: |
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This interested me as mine started "clacking" after I adjusted the tickover speed down to 950rpm +/- 50. At 1050rpm no clacking !
The clacking seemed to origininate in the gearbox/clutch area to my ear ? |
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drikko Flying Brick Rider
Joined: 20 Nov 2009 Posts: 1966 Location: Brisbane, OZ
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Posted: Thu Sep 02, 2010 12:32 am Post subject: |
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It's a common noise just before the crankshaft breaks causing the pistons to slam into the valves bending them all, holing all the pistons and bending all the con rods, pretty much need a new motor.
Only kidding! Mine does it too, but only when it's cold. Suspect it's the timing chain lash as per FD as that what it sounds like. _________________ K1100RS '97
Laverda RGS 1000 '84
Jim Young Trailer Sailer 5.7M WB
DISCLAIMER:- Anything I say may have been when I was drunk so please don't take it personally.
'Bigamy is having one wife/husband too many. Monogamy is the same.'
Oscar Wilde |
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TonySch
Joined: 19 Jul 2009 Posts: 3 Location: DERBY
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Posted: Thu Sep 02, 2010 4:29 am Post subject: Clacking Engine on tickover |
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Thanks Drikko,
wife says my underpants are completely ruined (before reading sentence 2) ... :0)
Hi Granth,
just purchased a stethoscope...let you know outcome...but if I raise the revs to say 1200....it goes away..APART from an occasional 'catch' which seems to slow the motor very briefly....on taking up drive and when running goes away....on hol this week on IOW...so no playing with it at the moment.....
Tony |
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granth Mad Brick Rider
Joined: 04 Aug 2010 Posts: 78 Location: Birmingham,England
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Posted: Thu Sep 02, 2010 6:34 am Post subject: |
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Hi,Tony have a good holiday !
Them stethyscope thingies can make yer paranoid.......listening for all those "odd" little noises!!!  _________________ 1993(94 MODEL) K1100RS IN ASTRAL BLUE
2006 URAL 750CC DALESMAN SIDECAR OUTFIT,
RED AND CREAM. |
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Flying Duck PsyKotic Waterfowl

Joined: 27 Jan 2005 Posts: 10102 Location: Bumf***, WA
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Posted: Thu Sep 02, 2010 9:28 am Post subject: |
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| drikko wrote: | | It's a common noise just before the crankshaft breaks causing the pistons to slam into the valves bending them all, holing all the pistons and bending all the con rods, pretty much need a new motor. |
Yep, They all do that.  _________________ 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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Hobieone
Joined: 16 Mar 2009 Posts: 19 Location: Keweenaw, Michigan
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Posted: Wed Sep 15, 2010 9:10 pm Post subject: |
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my 93 LT does that same thing; posted an inquiry when I first got it -- last year -- my prev owner (the only) said it was the header ..... I called it "header frap" and put in the question to the Zen masters here; I think Drake first suggested the Monkey nuts on the Alt; now he's says that should be a
"rummbling more that a clak" -- don't know and havent' wrenched it out, but it's still there 50% of the time ...... |
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granth Mad Brick Rider
Joined: 04 Aug 2010 Posts: 78 Location: Birmingham,England
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Posted: Thu Sep 16, 2010 8:21 am Post subject: |
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Recently I balanced the throttle bodies and adjusted the tick-over and the clacking noise disappeared......Now ticks over sweetly.  _________________ 1993(94 MODEL) K1100RS IN ASTRAL BLUE
2006 URAL 750CC DALESMAN SIDECAR OUTFIT,
RED AND CREAM. |
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Ted Site Admin

Joined: 03 Apr 2003 Posts: 1117 Location: Further
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Posted: Thu Sep 16, 2010 10:53 am Post subject: |
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I always wondered about the 36,000 mile service on the service sheet, "Renew the lining on the chain tensioner rail" - anyone actually ever done that? _________________
Ted
KOG#1 |
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Phil Marvin Rider in the Sky
Joined: 03 Apr 2003 Posts: 1389 Location: El Paso, Texas, USA
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Posted: Thu Sep 16, 2010 2:30 pm Post subject: |
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| Ted wrote: | | I always wondered about the 36,000 mile service on the service sheet, "Renew the lining on the chain tensioner rail" - anyone actually ever done that? |
Hi, Ted,
When I bought my '96 K1100LT (in 1997), I asked the dealer mechanic about that. He answered by saying when he was at K1100 school, the instructor was asked a similar question. The instructor's answer was that all of you are BMW dealer mechanics. You have dealt with bikes with quite high mileages. How many of you have EVER had or heard of a problem with the cam chain tensioner rail? No hands were raised. The instructor then said that on bikes with very high mileages, it might be a good idea. FYI, I sold my '96 with 122k miles on it and the cam chain tensioner rail had not been changed. It now has over 150k miles, and I still don't think it has been changed. _________________ Ride Safe,
Phil Marvin in El Paso, TX
'94 K75A/3
'95 K75RTP |
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