BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


SniperX

SniperX
Silver member
Silver member
Hello! I have a 1985 K100RT which I am fettling back to perfect. Just got it home toady and many areas need attention, but this is my first. When started cold, it makes what sounds like a cam chain noise. At tick over, but when revved, it smooths to that of a well tuned sewing machine with a good muffler. Oddly enough, when cold as soon as the choke is activated, this noise also dissappears. I haven't ridden it long enough to see if it totally disappears, only rode it a mile home....

Does this sound like a typical K bike noise? If so what parts are likely to be suspect?

BTW has about 60K miles on it but that is a close estimate only due to a faulty speedo / odo.

    

Holister

Holister
Life time member
Life time member
Just a thought but you may not be getting enough oil pressure at low revs. Is the oil pressure light on at idle? Check your oil is at the correct level. An old sight glass can make it difficult to get the level right. Oil could be old or incorrect grade.

The choke doesn't work as a 'choke'... its simply a fast idle setting

Give the machine a good sevice and see how she goes.
This is worth a read to get your machine up to scratch - You just bought a used K100, so what now?



Last edited by Kaptain Holister on Sun Oct 18, 2015 8:31 pm; edited 1 time in total


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  Noisy (cam chain) at low rpm 85 K100RT Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

Dai

Dai
Life time member
Life time member
From your description it sounds like you may have the common 'diesel knock' which can be caused by incorrect valve clearances and/or unbalanced throttle bodies. Well, it was the combination of the two on my bike... Very Happy


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

SniperX

SniperX
Silver member
Silver member
Oddly enough I though of both those after I went to buy oil and such! I'll check both tomorrow. IF someone can tell me how to check the throttle bodies for sync!

Cheers!

Kev

    

Holister

Holister
Life time member
Life time member
There's plenty of info to be found in the forum about TB sync. Try the search fuction on the Portal or the Forum tabs. It works really well. Then if you have any questions, come back and ask.


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  Noisy (cam chain) at low rpm 85 K100RT Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

92KK 84WW Olaf

avatar
Life time member
Life time member
As it happens I am experiencing something similar but lately noticed a spike in fuel consumption, first noticed in August when BAE was here and my K was taking more fuel than his on a like for like trip. My tickover has suffered and now I only get a good tickover when the K is warm. I am putting it down to injectors/fuelling but going to check the clearances too for peace of mind.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 40,490 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

SniperX

SniperX
Silver member
Silver member
I am going to do a complete service this Friday so after that I'll know if the noise goes away after the oil and filter change. And I'll check and adjust the valves if needed.

    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum