BMW K bikes (Bricks)

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1Back to top Go down   Exhaust gaskets need replaced ?? Empty Exhaust gaskets need replaced ?? on Mon Mar 16, 2020 5:47 pm

Heresy23

Heresy23
Silver member
Silver member
Hi , so I haven’t really been cleaning my 85 k100 this winter and now that I bought my first house I have a garage to do work. Well I noticed a oil drip on ground. I have never done exhaust work on this bike. It seems like the oil is concentrated on the bolts. These are preliminary pictures I’m literally still under the bike but I can get better pictures soon once I clean it and drive it to look for source. Can anyone agree it’s the exhaust gaskets ?? Thanks
Exhaust gaskets need replaced ?? 9c62eb10
Exhaust gaskets need replaced ?? 79463c10
Exhaust gaskets need replaced ?? 3e1ba410 Exhaust gaskets need replaced ?? 9c62eb10
Exhaust gaskets need replaced ?? 79463c10
Exhaust gaskets need replaced ?? 3e1ba410

    

2Back to top Go down   Exhaust gaskets need replaced ?? Empty Re: Exhaust gaskets need replaced ?? on Mon Mar 16, 2020 5:50 pm

Heresy23

Heresy23
Silver member
Silver member
This head used to be so clean and spotless. !


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85’k100 RT 73k
    

3Back to top Go down   Exhaust gaskets need replaced ?? Empty Re: Exhaust gaskets need replaced ?? on Mon Mar 16, 2020 6:07 pm

Snod Blatter

Snod Blatter
Life time member
Life time member
Your exhaust gaskets aren't there to hold the oil in.. scratch 

Small leak from the rocker cover seal perhaps?


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1989 K100RS SE ABS 8v  VIN: 0149214
Others: 1.5 x Honda CBX250RS-E, '94 CB250, '95 TRX850, '16 Z250SL
http://justbikethings.blogspot.co.uk/
    

4Back to top Go down   Exhaust gaskets need replaced ?? Empty Re: Exhaust gaskets need replaced ?? on Mon Mar 16, 2020 6:33 pm

Heresy23

Heresy23
Silver member
Silver member
Well I assumed oil could leak from there from the cylinders. ESP with my k100 known for bad piston rings


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85’k100 RT 73k
    

5Back to top Go down   Exhaust gaskets need replaced ?? Empty Re: Exhaust gaskets need replaced ?? on Mon Mar 16, 2020 7:13 pm

Heresy23

Heresy23
Silver member
Silver member
Into note it’s been sitting on the side stand for about two weeks when I had a stored somewhere else.


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85’k100 RT 73k
    

6Back to top Go down   Exhaust gaskets need replaced ?? Empty Re: Exhaust gaskets need replaced ?? on Mon Mar 16, 2020 8:02 pm

Dai

Dai
Life time member
Life time member
Given that, I'd definately suspect the cam cover gasket.


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'83 K100 upgraded to K100RS spec, '87 K100RT
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California
    

7Back to top Go down   Exhaust gaskets need replaced ?? Empty Re: Exhaust gaskets need replaced ?? on Mon Mar 16, 2020 9:53 pm

Heresy23

Heresy23
Silver member
Silver member
Ok, I just didn’t see any oil coming from the cover gasket , BUT I need to check again, the only place I get visible liquid oil (even after  wiping) is on the threads of the exhausts nuts .....but when I get home I’m totally cleaning all the grim and crap under my bike so I can definitively tell......so if it is not the cam cover gasket is there a possibility excess oil could leak thru the exhaust gaskets? Especially since previous owner replaced the whole exhaust system maybe he didn’t do gaskets? Or am I just being dumb?  Lol thanks everyone


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85’k100 RT 73k
    

8Back to top Go down   Exhaust gaskets need replaced ?? Empty Re: Exhaust gaskets need replaced ?? on Mon Mar 16, 2020 11:03 pm

MartinW

MartinW
Life time member
Life time member
Clean the engine thoroughly and let it dry. Place paper under the engine and leave it overnight. Check the paper for oil marks and try and deduce where the oil is coming from. If you can't narrow it down, clean again and spray the suspect areas with spray on talcum powder. Your choice of fragrance. You apparently can just use normal talcum powder but the spray on type works better on overhead surfaces.
Regards Martin.


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K75s Hybrid
    

9Back to top Go down   Exhaust gaskets need replaced ?? Empty Re: Exhaust gaskets need replaced ?? on Tue Mar 17, 2020 1:02 am

Laitch

Laitch
Life time member
Life time member
@Heresy23 wrote:. . . so if it is not the cam cover gasket is there a possibility . . .
You're getting ahead of yourself.

Follow Martin's and Dai's suggestions; first determine whether the cam cover or the timing chain cover is leaking.


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1995 K75 73,000 miles
Exhaust gaskets need replaced ?? Usa-lo10
    

10Back to top Go down   Exhaust gaskets need replaced ?? Empty Re: Exhaust gaskets need replaced ?? on Fri Mar 20, 2020 3:26 am

Holister

Holister
Life time member
Life time member
I agree. No point speculating. Just go for the most likely and work through in a process of elimination. Probably valve cover gasket.
Could be oil seeping from the water pump weep hole and blowing back, but it doesn't look like it's been blown around, it looks very localised.
If the sump is a little too full and if it's been on the sidestand for a while, oil can make it's way out an open exhaust valve to the exhaust.
I'd certainly take the valve cover off and clean the gasket or replace it.
Could be worth replacing the header gaskets anyway or if they're reasonably new in the last few years, just nip them up a little.


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1989 K100RT     VIN No.  0097367 (naked)  
1996 K1100RS   VIN No.  0451808
  Exhaust gaskets need replaced ?? Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

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