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]


1Back to top Go down   brown oily sludge when i drained oil Empty brown oily sludge when i drained oil on Mon Aug 17, 2020 2:10 pm

ballochman

ballochman
active member
active member
drained the oil on my k75s today brown sludge is what came out any ideas?thanks in advance guys

    

2Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 2:18 pm

MartinW

MartinW
Life time member
Life time member
What colour is it, is it milky, it could be water? Check to see if your water level is down. When was the last oil change? Is the bike new to you?
Regards Martin.


__________________________________________________
K75s Hybrid
    

3Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 2:34 pm

moriarti

moriarti
Life time member
Life time member
Brown oil DEFO water contamination.Run a compression test to identify blown head gasket ect.Oil/water pump maybe suspect also.This engine will need  SERIOUS Flushing  ;BMW;


__________________________________________________
1984 k100 rs red/black VIN  0004449
    

4Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 2:46 pm

92KK 84WW Olaf

avatar
Life time member
Life time member
Whats the history of the engine? Last oil change? had the bike long? any leaks of coolant? condensation inside engine, etc etc

Need to know more.


__________________________________________________
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 37,190 miles
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles.
    

5Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 2:58 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
There is a weep hole on the water/oil pump on the front of the engine. 

Is it blocked?  If so, coolant getting past the water pump shaft seal will be able to get into the oil past the oil pump shaft seal.  If the hole is plugged with dirt, etc, when you clear it, I would expect coolant to come out.  That will tell you that you need to rebuild the pump.


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

6Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 3:23 pm

BobT

BobT
Life time member
Life time member
When you start the bike do you ride it till the engine gets hot? Do you only do short journeys that never get the oil up to temperature? Do you ever start the bike and not ride it?
All of these things can destroy an engine.

    

7Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 4:02 pm

Laitch

Laitch
Life time member
Life time member
@MartinW wrote:What colour is it, is it milky, it could be water?
The description seems chocolate milky or unbaked fudgy.


__________________________________________________
1995 K75 81,000 miles
brown oily sludge when i drained oil Usa-lo10
    

8Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 4:17 pm

ballochman

ballochman
active member
active member
hi guys
the bike is new to me it lay covered for 12 years I got it running before I stripped it down to build a cafe racer.the water pump leakage hole is clear the oil was like milk chocolate.I have stripped the waterpump .but what is worrying me is there was water in number 3 cylinder when i was trying to get the bike running so im thinking the head gasket is away.when i got the bike it was just an engine in a frame i put water in it then ran it for about 15mins .so i drained the oil then noticed the crud i dont know whether to replace the engine yet i ordered a gasket so i will check the head anyway the engine has only done 16k miles.

    

9Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 4:24 pm

chris846

chris846
Life time member
Life time member
I think that removing the head is the right way to go - whether the stuff in the cylinder is coolant from a leaky gasket (or worse) or just rainwater that has found its way in during storage.
It is possible to reuse head gaskets, so take care removing it just in case its okay.


__________________________________________________
Sometimes I'm not really Suzi Quatro.
    

10Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 4:29 pm

ballochman

ballochman
active member
active member
cheers
i have a gasket on the way anyway and i have a pump rebuild kit but the pump now seems a bit stiff i might look for a replacement.if there is no joy with the head I will source a replacement engine.yet when i checked the compression 1 and 2 had 150 and three has 210.i did oil the cyclinders to unstick them when i got the bike but maybe the high compression and the fact that i found water in number 3 point to a gasket failure

    

11Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 5:17 pm

chris846

chris846
Life time member
Life time member
Don't abandon the engine just because of crud, this stored-for-a-long-time mystery engine ended up running just fine with good compression - and the head gasket was reused too:
brown oily sludge when i drained oil 01611
brown oily sludge when i drained oil 02011
And this sludge that was in it takes some beating:
brown oily sludge when i drained oil 00512


__________________________________________________
Sometimes I'm not really Suzi Quatro.
    

12Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 5:51 pm

ballochman

ballochman
active member
active member
if i find a crack or damage then i will consider an engine i put one in my st1300 this year as it was cheaper than honda gaskets.im hoping it will just be the gasket

    

13Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 6:51 pm

Dai

Dai
Life time member
Life time member
If the rebuilt pump is a bit stiff, chances are you've driven the big gear hard up against the housing. Give the nose a sharp rap with a hammer and then try turning it again.


__________________________________________________
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
    

14Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 7:39 pm

ballochman

ballochman
active member
active member
thanks will do

    

15Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Mon Aug 17, 2020 8:48 pm

RicK G

RicK G
admin
admin
Most definitely water contamination either from a bad pump or head gasket. Check the coolant for oil and a leakdown test to check for head gasket damage.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

16Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Tue Aug 18, 2020 4:53 am

ballochman

ballochman
active member
active member
unfortunately the engine has no water attached I had stripped it all down for painting when i dropped the oil and went to change the pump kit as it had a leak from the right hand side area of the cover high up.but during my getting it running process i blew out the cylinders with air and number 3 had water in it.thus suspecting the gasket.before i put the water in and got the bike running the oil had been old but black when i removed it the colour was brown it only ran up and down the carpark too

    

17Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Tue Aug 18, 2020 7:05 am

RicK G

RicK G
admin
admin
If there is water in one cylinder then the head needs to come off.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

18Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Tue Aug 18, 2020 8:29 am

92KK 84WW Olaf

avatar
Life time member
Life time member
If it was sitting and leaking at an injector O ring water can enter a cylinder through an open or badly seated valve.


__________________________________________________
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 37,190 miles
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles.
    

19Back to top Go down   brown oily sludge when i drained oil Empty Re: brown oily sludge when i drained oil on Tue Aug 18, 2020 12:44 pm

ballochman

ballochman
active member
active member
so took head off and all appears good so maybe the pump is the cause I will fit a new kit in the pump and a new head gasket and take it from there.thanks for your help guys
dont know how to post pictures or i would show you

    

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