Author New 2020 XR- Coolant Leak  (Read 2538 times)

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  • Offline Aero1299   gb

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    Offline Aero1299

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    New 2020 XR- Coolant Leak
    on: February 27, 2021, 12:23:31 pm
    February 27, 2021, 12:23:31 pm
    Hi
    Bought the bike brand new, and since day one the coolant level was dropping after each ride. Took it back to BMW who said they could not find a leak. I continued to top the expansion tank up, but problem remains.
    It's now had it's 1st service and again BMW had no comments on the matter. I recently noticed that the oil level was rising gradually, so this started to worry me considerably, especially as the water pump is inside the sump.

    It's with BMW at the moment and I've convinced them to take some measures. They are currently having the oil analysed to see if has coolant in it.
    Anyone else experienced this with the new engine- I know the old engine had coolant pump leak issues

    Richard

  • Offline SimonUK   us

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    Re: New 2020 XR- Coolant Leak
    Reply #1 on: February 27, 2021, 04:17:06 pm
    February 27, 2021, 04:17:06 pm
    I am pretty sure that if there was coolant leaking into your oil you would visually see it without needing to send samples for Analysis,

    My '14 also had disappearing coolant from when I bought it. I kept track of it over an extended mileage and it never showed any visual signs of leaks. 2 things to note - this is an 'expansion tank', and the difference between min and max is between 50 and 100ml.

    Eventually the level settled down and I found that just on or below min was where my 'system' was happy, topped up above that it would seem to settle at taht mark.

    My guess in your situation is that the coolant system is not entirely 'full' yet  and every time you ride it gets purged a little more.

  • Offline Aero1299   gb

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    Offline Aero1299

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    Re: New 2020 XR- Coolant Leak
    Reply #2 on: February 27, 2021, 05:41:02 pm
    February 27, 2021, 05:41:02 pm
    Thanks Simon for the reply
    It was my local BMW dealer that suggested the oil analysis. I've read that Glycol does mix easily with oil and forms a brown oil, which is what I've got. Any water content evaporates. Considering the oil is only 400 miles old since the 1st service, I would think it should still be golden.

    Interesting what you say about yours, but the difference is that mine keeps dropping until the expansion tank is empty. The bikes done 1100 miles now so would expect any air pockets to be driven out, and overall, I've probably added more than a pint of coolant mix each time the level has dropped close to the bottom of the expansion tank, to make sure it doesn't suck air back in as the system cools.

    Also, the question remains why the oil level has risen from half way pretty much to the top of the sight glass in the 400 miles.
    I should get the results back next week, so fingers crossed.

    Let's hope it's not a common fault on the new engine.

  • Offline SimonUK   us

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    Offline SimonUK

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    Re: New 2020 XR- Coolant Leak
    Reply #3 on: February 27, 2021, 07:52:43 pm
    February 27, 2021, 07:52:43 pm
    I missed the brown oil part in your OP! Keeps us informed of your findings

  • Offline smithy   au

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    Offline smithy

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    Re: New 2020 XR- Coolant Leak
    Reply #4 on: February 28, 2021, 11:54:17 pm
    February 28, 2021, 11:54:17 pm
    *Originally Posted by Aero1299 [+]
    Let's hope it's not a common fault on the new engine.

    This is the first we've heard of it on the Gen-2 engine......very common on the Gen-1 though...but as you mention, the water pump is internal and intergral with the oil pump....not an easy fix if it is the water pump leaking.

    https://www.realoem.com/bmw/enUS/showparts?id=0E43-USA-09-2019-K69-BMW-S_1000_XR_0E41,_0E43_&diagId=11_7211

    Smithy.
    When I die, I want to go peacefully in my sleep like my Grandfather....not screaming like the passengers in his car..!

  • Offline Aero1299   gb

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    Offline Aero1299

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    Re: New 2020 XR- Coolant Leak
    Reply #5 on: March 01, 2021, 10:04:28 am
    March 01, 2021, 10:04:28 am
    Hi Smithy
    Glad to hear it's not a common problem on the latest engine, and I suppose it shares the same components as the RR which has been around for a while now.
    I'm Still waiting to hear the outcome of whether the oil has coolant mixed in it. As you say, not a particularly easy fix as it means taking the sump off. I'll let you know the outcome and solution (hopefully)

  • Offline smithy   au

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    Offline smithy

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    Re: New 2020 XR- Coolant Leak
    Reply #6 on: March 01, 2021, 11:54:06 pm
    March 01, 2021, 11:54:06 pm
    *Originally Posted by Aero1299 [+]
    Hi Smithy
    As you say, not a particularly easy fix as it means taking the sump off. I'll let you know the outcome and solution (hopefully)

    Which also means the exhaust headers off, not such an easy task either. :012:

    Smithy.

    When I die, I want to go peacefully in my sleep like my Grandfather....not screaming like the passengers in his car..!

  • Offline Aero1299   gb

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    Re: New 2020 XR- Coolant Leak
    Reply #7 on: May 23, 2021, 03:41:00 pm
    May 23, 2021, 03:41:00 pm
    Finally resolved the coolant leak on the new XR. The oil analysis proved that there was no coolant in the oil, which was good, but still couldn't explain why the coolant continued to drop each time the engine was running. My local BMW dealer was mystified, as was BMW UK. They finally got a clue from BMW (presumably in Germany), who revealed that the pump is separated into two halves with a chamber in between. The chamber is designed to capture any leakage from either the oil or coolant side. This chamber vents to the outside, at the rear of the sump, next to the exhaust collector box support bracket. When they removed the collector box, they found some tell-tale green deposit from the coolant. They replaced the pump and associated pipework and Hey Presto- all seems good. The strange thing was, that they could not detect this leak by applying pressure. It appeared to leaks through the shaft seal only when the pump is rotating, almost like the shaft has a very fine thread, that winds the coolant out, when rotating.

  • Offline Molsal   gb

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    Offline Molsal

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    Re: New 2020 XR- Coolant Leak
    Reply #8 on: May 24, 2021, 12:12:07 am
    May 24, 2021, 12:12:07 am
    Happy that you got it sorted eventually, this info may well prove very helpful in the future for other owners.

  • Offline runnerhiker   us

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    Offline runnerhiker

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    Re: New 2020 XR- Coolant Leak
    Reply #9 on: June 20, 2021, 06:52:09 pm
    June 20, 2021, 06:52:09 pm
    The seal on the water pumps of vehicles will alway "leak", always.  They are not meant to run 100% dry, a little bit of liquid is needed at the rotating surface for lubrication.  And all these pumps are designed with a weep hole for this "leak" to evacuate.

    Every once in a while, there is one that "leaks" just a bit more than it should, like yours.
    '19 S1000XR
    '20 R1250 RS
    '22 Kawasaki ZH2