Coolant drip from overflow - BMW G310 R/GS Forum
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post #1 of 24 (permalink) Old 03-09-2018, 12:29 AM Thread Starter
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Coolant drip from overflow

Hi Folks, Has anybody experienced coolant dripping from the overflow pipe? My GS310 has been leaving a small puddle when not used for a couple of days that appears to be coming from the overflow pipe. It seems to have started since the 1000 km service - when I first checked the coolant level was in the middle of the min/max indicators. The drip occurs intermittently and now the level is down to minimum. I am waiting for the dealer to get a window to take the bike in. (I've now done 1600 km).
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post #2 of 24 (permalink) Old 03-09-2018, 01:46 AM Thread Starter
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post #3 of 24 (permalink) Old 03-09-2018, 01:53 AM
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I had the problem initially on the g310r, the release valve is a mechanical valve and does let some of the coolant out, it did disappear after some time. found that it only happened when the coolant was at half way between min and max or above. Could have something to do with change in atmospheric pressure when standing for a while.
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post #4 of 24 (permalink) Old 03-09-2018, 03:21 PM
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There is a thread on this issue.
I had the same problem and my dealer changed the water pump.

The first days of the forum more people had this issue but I havenít heard anything about this the last ....... (many) months (?)
Bring the Beamer back to the dealer and let them solve it.
Itís a warranty item.
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post #5 of 24 (permalink) Old 03-12-2018, 01:48 AM Thread Starter
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Thanks Folks, I've just left the GS at the dealers today. It's meant to be for investigatory work but I noticed the service clerk noted it as a coolant pump failure without prompting so I suspect it's a known issue. I will search for the thread thanks Bas...
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post #6 of 24 (permalink) Old 03-12-2018, 12:02 PM
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Medicine Man,
Search the forum for 'engine coolant' and a lot of threads will pop up.
Hope this will help you.
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post #7 of 24 (permalink) Old 03-13-2018, 04:07 AM Thread Starter
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Bas310,
Thanks for the forum search tip - so this looks like a known issue. There was no visual leaking around the coolant pump but I suspect a failing pressure relief valve due to the intermittent nature of the fault. I hope the remedial work will put a long term end to it. It sounds like it fixed your G310R.
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post #8 of 24 (permalink) Old 03-13-2018, 11:58 AM
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This problem starts recall i think
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post #9 of 24 (permalink) Old 03-13-2018, 12:17 PM
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Yes, I have experienced this. I took the bike back to my local dealer and the water pump was replace under warranty. It is recommended to take it back at your earliest convenience to get it replaced. The longest waiting period will be getting the new pump. It is definitely worth your time and piece of mind to get this automagically replaced.

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post #10 of 24 (permalink) Old 03-13-2018, 06:45 PM
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Wondering if this is affecting all G310's?
Maybe those with this issue could state their production date on the bike and model, GS or R.

2018 Black 310GS
2011 Royal Enfield Classic with Cozy Bullet sidecar
1981 Honda 400 Homemade Bobber
1978 Honda Naked Goldwing
16 past varieties too numerous to mention
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