[Dave]

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..

This seems to be a known problem to BMW with the 310 my dealer mentioned it to me that he has replaced a few seals in water pumps already and he wanted to check mine. Took in in for a service and found a small drip. They replaced the seals in the water pump under warranty.

 

[G0MYW]

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.!

 

[Medicine Man]

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

 

[Rm78]

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 🙂

 

[DesertSolitaire]

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.

 

[DesertSolitaire]

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

 

[DesertSolitaire]

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.

 

[DesertSolitaire]

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?

 

[yechave13]

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.

 

[ARBOLMANO]

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.

 

[audisportcarrasco]

That's why I got my F800GS sell you the leaking motor g310 $1000 bucks cranks right up 2018

 

[rutledge4290]

Same issue on a 23 with 1400 miles.