Oil Weep from Engine Leading Edge - BMW Luxury Touring Community
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post #1 of 9 Old Jul 18th, 2015, 11:08 am Thread Starter
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Oil Weep from Engine Leading Edge

Oh, mighty oracles of wisdom, I come seeking knowledge.

On leading edge of my 2005's engine, there is a rounded cover with some bolts in a somewhat-circular pattern. What lies under this cover?

I have a tiny bit of oil weeping from the bottom edge of this. Something to be concerned about, or just put a new gasket or o-ring on? Will a bunch of oil drain out when removed, as in, should I plan on doing an oil change when I take care of this?

Antony (Tripod)
Dallas' Northern Suburbs
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post #2 of 9 Old Jul 18th, 2015, 1:19 pm
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Re: Oil Weep from Engine Leading Edge

Quote:
Originally Posted by deputy5211 View Post
Oh, mighty oracles of wisdom, I come seeking knowledge.

On leading edge of my 2005's engine, there is a rounded cover with some bolts in a somewhat-circular pattern. What lies under this cover?

I have a tiny bit of oil weeping from the bottom edge of this. Something to be concerned about, or just put a new gasket or o-ring on? Will a bunch of oil drain out when removed, as in, should I plan on doing an oil change when I take care of this?
Not an Oracle Tony but only thing on front of engine is the combination oil pump and water pump, the oil pump is closest to engine and between the oil pump and water pump on the bottom there is a drain hole in case either seal starts leaking.

Gary
2018 R1200RT
Past rides
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2000 K1200LT
1992 K1100LT
2000 V Star 650/Velorex sidecar
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post #3 of 9 Old Jul 18th, 2015, 8:58 pm
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Re: Oil Weep from Engine Leading Edge

Pictures makes diagnosis a lot easier.
Patric likes this.

Scott
2007 LT
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post #4 of 9 Old Jul 19th, 2015, 11:27 am Thread Starter
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Re: Oil Weep from Engine Leading Edge

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Originally Posted by gary45 View Post
Not an Oracle Tony but only thing on front of engine is the combination oil pump and water pump, the oil pump is closest to engine and between the oil pump and water pump on the bottom there is a drain hole in case either seal starts leaking.
Is small amount of oil weep along bottom of arc anything to be worried about?

I presume the oil and water pumps are isolated to prevent oil from getting into coolant and coolant from getting into oil.

I do not believe any cross contamination at this point as last two oil changes the weepage has been there and Blackstone Labs oil analysis report did not list coolant or water in engine oil.

Am I going to drain coolant and/or oil by opening that cover to change gasket? Anything special I need to anticipate when removing that cover to change the gasket/o-ring?

Anyone have p/n for the gasket?

Antony (Tripod)
Dallas' Northern Suburbs
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If you want to be happy for a year, marry.
If you want to be happy for a lifetime, ride a motorcycle.

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post #5 of 9 Old Jul 19th, 2015, 1:40 pm
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Re: Oil Weep from Engine Leading Edge

Quote:
Originally Posted by deputy5211 View Post
Is small amount of oil weep along bottom of arc anything to be worried about?

I presume the oil and water pumps are isolated to prevent oil from getting into coolant and coolant from getting into oil.

I do not believe any cross contamination at this point as last two oil changes the weepage has been there and Blackstone Labs oil analysis report did not list coolant or water in engine oil.

Am I going to drain coolant and/or oil by opening that cover to change gasket? Anything special I need to anticipate when removing that cover to change the gasket/o-ring?

Anyone have p/n for the gasket?
The pumps are separated with an air gap hence the drain hole between them, the only way to get a mix is with a bad head gasket.

If not dropping only wet maybe one of those things that can be watched

Pic would be nice

Gary
2018 R1200RT
Past rides
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2000 K1200LT
1992 K1100LT
2000 V Star 650/Velorex sidecar
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post #6 of 9 Old Jul 19th, 2015, 7:15 pm
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Re: Oil Weep from Engine Leading Edge

If you pull the cover you expose the impeller of the coolant pump. There should be no oil there. Could be from the oil pressure sending unit or the timing cover. If it is not a serious leak I would just monitor it.

John
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post #7 of 9 Old Jul 20th, 2015, 2:02 pm
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Re: Oil Weep from Engine Leading Edge

Hi Tony,

Not that I'm an expert, at all, but I had the same happening to my '99 from the cam/timing chain cover. The large headed bolds don't get tightened all that tight and there is a small amount of oil that will be sitting on the bottom of the cover and towards the front of the bike. I tightened the lower left bolt just a wee bit more and the leak appears to have abated. I'll continue to monitor and may need a new gasket in the future.

Have fun,
Jer

Jerry Palma
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post #8 of 9 Old Jul 20th, 2015, 3:32 pm
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Re: Oil Weep from Engine Leading Edge

My guess is your referring to the water/oil pump.

Had that issue on my 03 a while back.
Relatively easy fix.
Replace #27 in the pic below,
Use Yamabond #4 (or sealant of your choice) on the metal sealing surfaces.

I'd do an oil & coolant change while your there.






Ken


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post #9 of 9 Old Jul 21st, 2015, 1:51 am Thread Starter
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Re: Oil Weep from Engine Leading Edge

Quote:
Originally Posted by CR125Honda View Post
My guess is your referring to the water/oil pump.

Had that issue on my 03 a while back.
Relatively easy fix.
Replace #27 in the pic below,
Use Yamabond #4 (or sealant of your choice) on the metal sealing surfaces.

I'd do an oil & coolant change while your there.
Ken,

Yes, that is the area. Oil is weeping from under #20, bottom-most bolt and about 1/2" either direction of the lowest.

Due for lubricant change anyway, just got back from 4,000 trip Dallas-L.A.-SFO, and back and no doubt the high speeds and desert heat/dust took their toll on these fluids. May as well change coolant, may be original.

Antony (Tripod)
Dallas' Northern Suburbs
-----------------------------------------------

If you want to be happy for a day, drink.
If you want to be happy for a year, marry.
If you want to be happy for a lifetime, ride a motorcycle.

-----------------------------------------------


'05 K1200LT - Dark Graphite - RIP 04 OCT 2015
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'99 Road King Classic - Custom Blue/Silver & Chrome - "My Baby" Gone but forever in my heart!

and many, many others.
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