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Old 01-23-2013, 05:58 PM   #1
EnderTheX OP
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What is this white stuff on my F800GS?

Will someone please help me understand what this white stuff is on my bike?

Here is what I know:
1. This has been here for a while, doesn't rub off with finger (that's how i clean my bike )
2. There does not appear to be white stuff on the coolant hoses close to the spot.
2. Oil is full and normal looking (not milky)
3. Bike has been running great... there might be some valve noise... 26.5k hard miles, done about every recall/service bulletin/repair you can think of.

Thanks!







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Old 01-23-2013, 06:40 PM   #2
imnsane
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I think you're having too many night time fantasies.....
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Old 01-23-2013, 07:22 PM   #3
Motorfiets
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coming outta the weep hole for the water pump

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Old 01-23-2013, 07:38 PM   #4
EnderTheX OP
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Originally Posted by Motorfiets View Post
coming outta the weep hole for the water pump
Hmmm... does this mean my coolant is bad? Does it mean the bike overheated (it was a hot summer)? Does this mean I don't clean my bike often enough....? Is there something I should be concerned about or do?
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Old 01-23-2013, 07:40 PM   #5
Motorfiets
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Quote:
Originally Posted by EnderTheX View Post
Hmmm... does this mean my coolant is bad? Does it mean the bike overheated (it was a hot summer)? Does this mean I don't clean my bike often enough....? Is there something I should be concerned about or do?
is your coolant low?

pull the bottom coolant line off down by the oil filter left side of the motor and see if it's nasty also.
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Old 01-23-2013, 08:20 PM   #6
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On most water pumps a small leak at the weep hole indicates a bad seal. I'd say it's time to rebuild the waterpump.
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Old 01-23-2013, 08:32 PM   #7
BcDano
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I would check the torque on the water pump bolts. I had a dealer do a flush and they didn't torque one down properly and it came loose and it leaked.

If not then the seal would be my next guess.
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Old 01-24-2013, 06:27 AM   #8
JRWooden
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"They all do that" ....

Sorry ... couldn't resist....

Mine when new had some oil or melted assembly lube leak out of the weep hole,
then later started leaking coolant on hot days in stop-go traffic.

Dealer finally replaced pump under warranty and it was a redesigned part....

If not under warranty, the pump can be disassembled, and there are a couple of o-rings in there that might be causing the issue.

See: http://f800riders.org/forum/showthre...-on-water-pump

Also, the radiator does not ALWAYS refill its self from the overflow bottle when it gets low.
I would check the coolant level at the radiator by first pinching off the tubing/line that goes from the overflow bottle to the radiator, and then taking the cap off (bike cold), and see how low you are....
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Old 01-24-2013, 07:45 AM   #9
EnderTheX OP
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Quote:
Originally Posted by JRWooden View Post
"They all do that" ....

Sorry ... couldn't resist....

Mine when new had some oil or melted assembly lube leak out of the weep hole,
then later started leaking coolant on hot days in stop-go traffic.

Dealer finally replaced pump under warranty and it was a redesigned part....

If not under warranty, the pump can be disassembled, and there are a couple of o-rings in there that might be causing the issue.

See: http://f800riders.org/forum/showthre...-on-water-pump

Also, the radiator does not ALWAYS refill its self from the overflow bottle when it gets low.
I would check the coolant level at the radiator by first pinching off the tubing/line that goes from the overflow bottle to the radiator, and then taking the cap off (bike cold), and see how low you are....

Ha! If I had a dime for every time my dealer has said "they all do that" I could buy a candy bar.

I guess I will have to check the coolant system... apparently I need to remove the right side fairing to even access the cap

From reading that thread you quoted and the other comments on this thread it seems like this is coolant and the seals on the water side of the pump need to be replaced... Obviously my bike is conveniently out of warranty so I will try to find the seals and do it myself.

Has anyone has luck ordering just the o-rings for the water pump? Can someone recommend a source for the fancy required nitrite free coolant?
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Old 01-24-2013, 11:49 AM   #10
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Quote:
Originally Posted by EnderTheX View Post
Ha! If I had a dime for every time my dealer has said "they all do that" I could buy a candy bar.

I guess I will have to check the coolant system... apparently I need to remove the right side fairing to even access the cap

From reading that thread you quoted and the other comments on this thread it seems like this is coolant and the seals on the water side of the pump need to be replaced... Obviously my bike is conveniently out of warranty so I will try to find the seals and do it myself.

Has anyone has luck ordering just the o-rings for the water pump? Can someone recommend a source for the fancy required nitrite free coolant?
I've got the F658GS and was able to remove the cap without removing the fairing, with some dexterity and a few cuss words ...... It might be harder on the F800GS with slightly larger radiator...

I called up Prestone and asked, and they told me (FWIW) that all of their antifreeze was nitrite free,
so that's what I used....

I did not get to see my pump when it was taken apart, but the mechanic remarked that he thought new o-rings would have fixed it, but since they had the pump, and so-on they went ahead and used it...

that's about all I got ...

JRWooden screwed with this post 01-24-2013 at 11:59 AM
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Old 01-24-2013, 12:45 PM   #11
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Quote:
Originally Posted by JRWooden View Post
"They all do that" ....
Actually.........all the parallel twins do at first. S, ST, R, GS After every PDI ride of the F's I had to wipe down the coolant from the weep hole. It was coming from the dynamic seals and went away by the first inspection after the seals had broken in.

The air space between the two o rings 11 is no mans land. If oil gets by the inside o ring it'll drip out of the weep hole. If coolant gets by the outer o ring AND/OR the dynamic seal, it'll weep out the same hole. Prob is, if it's coolant it MAY be just the o ring, or MAY be the dynamic seals. Gambling man?

Just to add complexity, the early bikes had metal drive gears on the engine and pump and this was later changed to plastic. Can't have both, can't get the metal geared pump anymore so make sure you use the same material gears, swapping from your old pump if nec.

I didn't read the threads in F8org where JrWoody also stalks so this may be old news.

Oh, and that Dealer bought whatever coolant from the local "outlet" and didn't use BMW rebranded expensive crap (the blue stuff).
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Old 01-24-2013, 07:12 PM   #12
JRWooden
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Originally Posted by Reaver View Post
Actually.........all the parallel twins do at first. S, ST, R, GS .
Yeah ... they ALL do that .... see that's what I said ...

You can't read ALL my old threads... you don't have time

For a while at least, the replacement water pumps were coming with both a plastic and a metal gear so they could be matched to the existing gear material on the camshaft ... not sure if they still do that.... it would be a "revenue enhancer" for the dealership if they didn't ............

Uber-Blue ... the BMW dealer has it for about $40 / gallon ... it's great ... the blue color comes from the dissolved pharmaceuticals that are in it ... that's why you have to stay away from the green crap Reaver uses ....

It's all good... I have a good supply of blue cool-aid, it comes in a 25.4 oz (750 ml) cans imported from down under............ but It's only for human cooling systems....
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Old 01-27-2013, 05:16 PM   #13
EnderTheX OP
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OK... so I took off the panels, clamped the hose shut and opened the radiator cap. To my surprise there was coolant all the way to the top!

My reservoir was at the low side so I topped it off and I am trying to put on the right side panel again...

For the life of me I can't get the damn screw in that goes through the beak, side panel and air dam...

Does anyone have any tips on this screw? I hate it...


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Old 01-28-2013, 06:04 PM   #14
Gadz
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Here in Brazil, this problem is very common. BMW replaces it under warranty. There are some guys that had it replaced two or three times. The water pump has poor quality o'rings. BMW replaces the pump instead of o'rings.
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Old 01-28-2013, 06:07 PM   #15
EnderTheX OP
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Originally Posted by Gadz View Post
Here in Brazil, this problem is very common. BMW replaces it under warranty. There are some guys that had it replaced two or three times. The water pump has poor quality o'rings. BMW replaces the pump instead of o'rings.

I wish I was under warranty... I'll be damned if I pay a ton of money for something that isn't totally broke... I don't know if my pump seals are bad enough to do much about it yet except top off my reservoir.
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