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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.

 

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 haven’t heard anything about this the last ....... (many) months (?)
Bring the Beamer back to the dealer and let them solve it.
It’s a warranty item.

 

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...

 

Medicine Man,
Search the forum for 'engine coolant' and a lot of threads will pop up.
Hope this will help you.

 

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.

 

This problem starts recall i think

 

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.

 

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.

 

Yes I am surprised that BMW are not recalling all 310s considering the number already affected. My bike was repaired within 2 days - so it looks like the parts are already held at the dealers. Unfortunately being Thailand I couldn't get a breakdown of what work was done in English. I was told to google the part numbers to understand the extent of the work however this doesn't work!
My bike is a GS310 bought in December 2017..

 

coolant drip

Already 3 owners have the same issue
I have already changed once the pump
Still an issue I have contacted the dealer they told me that I should change- replace again the pumb:surprise::surprise:

 

pffff thats bad news replacing the pump is not the issue follow this tread every day from now on
otherwise it has to go i want a reliable bike or nothing:grin2:

 

Well let's us know if you find a reliable bike with no issues whatsoever.
Not sure if one exists.:surprise:

 

Have to wait till winter is over in europe its freezing right now and the next 2 weeks to much salt on the road cry

 

If coolant is coming out of the overflow pipe then the pump is not the issue, seems like service is stabbing in the dark.

 

My 2017 G310R drips coolant from the pipe that drains the gap in the water pump between the water seal and the oil seal. When one of them fails, water or oil is drained down this tube to prevent the oil and water mixing. It is a similar design to the single cylinder BMW F/G 650 which had similar problems with the water pump seals - BMW sell a seal/pump kit when they have a problem. Looks like I will have to have a new water pump.

 

The pump replacement appears to have cured my leak. I will uncross my fingers soon....

 

after several weeks my dealer has agreed that topping up coolant every week is not standard..!!
They were not keen on fixing this;
A. I was overfilling the coolant reservoir.!!! not that anyone ever saw me do it..
B. "They all do that ... Sir.." !!
At last a mechanic doing the annual service said it was not right, and he wanted it back in when the parts had arrived.

sense at last..

 

I had my G310R done about 4 months ago. The seals in the water pump were replaced. If you put a piece of paper underneath the engine, you will probably see coolant dripping from the overflow tube which comes from the bottom of the water pump and exits on the left side of the engine behind the plastic sump cover.

 

My g310r has today gone in for the water pump service kit(repair)
But I have been given a GS F850 while they do the work.!

 

Today my GS is back in the dealers for the 2nd pump change! The same issue has occurred at 5700 kms...

 

My gs is having the third times. Its only 3900km. Still waiting for the part. This time dealer will replace the whole pump not the seal as 1st n 2nd. Let you know if i have the 4th times 🙂

 

I'll join the club! Put in a shiny new skid plate Tuesday and noticed a small amount of dried residue on the inside of the OEM plate but since the OEM plate is black I couldn't easily determine oil vs coolant and shrugged it off. After a short ride and oil change today, I noticed the interior of the new skid plate had collected a few mL's of coolant. My levels are above Min but I will be tying off a balloon to the suspected hose and determining if the leak occurs in storage or when I start the bike. Looks like i'll be heading to the dealer soon though.

 

Well I was bored so I decided to investigate further; Found one drop of coolant since the oil change from 4 hours ago, which is approx when the engine last ran.

The culprit is the thinner of the two hoses (Sagittal View)

Can anyone weigh in; Is the thinner of the two hoses the drain between the water seal and engine seal? If so, what is the other, thicker, hose? I've tied off the thicker one with clingwrap and set up a tupperware basin for the thinner hose to determine volume of drain overnight. (Frontal View)

Will run the engine tomorrow to observe if there is more drip with water pump running. Cheers

 

Per Matt from MotoWoRX, at 2'30" of this video

the thinner hose is connected to the water pump weep hole. From what I understand, a little coolant seepage from water pump weep holes is normal, but too much would indicate a failed seal or faulty water pump. The question is how much is too much? My first picture would indicate 2-3 ml seepage in a 48 hour period. That seems like more than a few drops... But the bike was in storage for over a month. I suspect if there is only a small seepage on tomorrow's engine test, then this is probably...hopefully...a normal amount of seepage, especially since my coolant levels have been relatively stable. Stay tuned.

 

No drips after 24 hours in the garage..Set up a catch bottle with lots of duct tape..no drips throughout a 5 min ride...maybe I should check for seepage after a longer, higher temperature inducing ride?

 

Just got a 310gs. I decided to have the dealer do the 600 mi oil change, to be on the safe side and not have warranty issues. Almost two hours into the service, I thought the bike was finished. They left it run for quite some time to get hot and discovered a coolant leak.

I'm told it will take about a month for the parts and service availability to replace the pump. It's the 4th pump defect on a 310GS at this dealership recently.

 

BMW will fix it, bad batch castings, be patient and once done, for get about it. The 310 proving to be a very low problem unit once this issue sorted out.