BMW S1000R

Main S1000R Boards => S1000R - General Chat => Topic started by: Lavaspit on August 29, 2017, 07:30:59 PM

Title: Coolant leak
Post by: Lavaspit on August 29, 2017, 07:30:59 PM
I rode to the market and back - maybe 3 miles.  As I was parking I noticed a lot of steam coming off he radiator - thought it was because it was getting cold and wet fast.  Then I saw that coolant was pouring onto the ground.  It looks like its coming from the upper radiator and falling on the lower.  Its a gush.

Nothing unusual happened.  Bike was running strong right before this happened.  No damage anywhere on the bike.  Last year some one bumped me and knocked the main coolant hose seal loose.  That was repaired. 

Will post images later.

Any thoughts?
Title: Re: Coolant leak
Post by: edison on August 31, 2017, 11:23:21 AM
You are not the only one.... same thing happened to me and it's all been fixed under warranty so I didn't ask much questions... It seems a common problem tbh as I know several guys had the same issue. Coolant will dry out quite quickly so do remember to fill up some water if you want to ride it to the dealer...

Good luck
Title: Re: Coolant leak
Post by: Lavaspit on August 31, 2017, 10:25:18 PM
Thanks man.  So you didn't get any details about why this is a common phenomenon?

It wasn't leaking, it was spewing out - as if a seal had broken or something.  Or maybe that's just how it behaves when its hot.

I've had the bike for 13 months, so Im not sure about my warranty.  But its only got about 3k on it, so I;d be super pissed if its not taken care of. 

Title: Re: Coolant leak
Post by: edison on September 01, 2017, 10:19:10 AM
*Originally Posted by Lavaspit [+]
Thanks man.  So you didn't get any details about why this is a common phenomenon?

It wasn't leaking, it was spewing out - as if a seal had broken or something.  Or maybe that's just how it behaves when its hot.

I've had the bike for 13 months, so Im not sure about my warranty.  But its only got about 3k on it, so I;d be super pissed if its not taken care of.

I think they told me it's a cap failure of the coolant tank.

Mine was exactly the same like following video.


Title: Re: Coolant leak
Post by: chrisopotamus on September 01, 2017, 10:48:02 AM
Happened to me too and it was air trapped in the radiator. I burped the radiator, topped it up and then replaced the cap just in case.
Title: Re: Coolant leak
Post by: Lavaspit on September 01, 2017, 06:28:36 PM
Hmm...where's the actual cap?  That looks like a split in the reservoir.

Beyond warranty I'd think that would be considered a defect.

I'm not going to try and say I miss my airheads in general, but today I definitely do.
Title: Re: Coolant leak
Post by: SimonUK on September 01, 2017, 09:08:08 PM
*Originally Posted by Lavaspit [+]
Hmm...where's the actual cap?  That looks like a split in the reservoir.

that is the original design coolant 'Expansion' tank, it had and overflow hole in the top of the reservoir. The new design has no hole, but an outlet with an overflow pipe that comes out of the cap.

I still believe that these 'catastrophic' expulsions as seen in these videos come dome to air in the system somewhere, how it got here I don't know. Luckily for me I have not had this issue. I did loose coolant when I 1st got the bike (14 model with the old design tank), but that stopped once the new design tank was in place.
Title: Re: Coolant leak
Post by: Lavaspit on September 01, 2017, 09:11:39 PM
Mine is a 2016.

It sure looks catastrophic.
Title: Re: Coolant leak
Post by: Dr. D on September 03, 2017, 01:08:32 AM
Mine did something like that. It was a faulty radiator cap. It should vent when the coolant gets too hot, but it was stuck closed. Hence, hot coolant out the reservoir.
Title: Re: Coolant leak
Post by: MA413 on March 10, 2019, 08:45:11 PM
Sorry old thread but desperate for some advice. My new ride has 128 miles on her and pissed out coolant when I got home.  So, I pull the cowl and notice my rad cap was not secure completely to the pronounced stop.  Unsure why, but I am curious to know can I fill the rad with good old 50/50 anti freeze or should I get BMW?  I f I go for option ďAĒ will this void the warranty because the Prestone is green and might be noticeable mixed with BMW blue fluid. I donít want to raise the red flag at the dealer. My dealer is an hour drive from home.  Iím real disappointed reading the negative remarks about the ongoing coolant issue.  Thanks!
Nick
Title: Re: Coolant leak
Post by: nrthrnbkr on March 11, 2019, 08:34:10 AM
I ended up with coolant leaking past the cap after a service - I just topped up a few mil with distilled water, took the cap off and re-fastened it - seemed to do the trick. Looking at the forum though there are various coolant link issues - From The Rad Cap, From The Coolant Reservoir Overflow and from the Water Pump Seal - so is always best to check out all options- lots of really useful info on all of these on the forum.     
Title: Re: Coolant leak
Post by: MA413 on March 11, 2019, 11:10:18 AM
I think Iíll go the distilled route and play it safe.  I appreciate the input.
Title: Re: Coolant leak
Post by: beech on March 13, 2019, 05:52:20 PM
Don't use "good old antifreeze" either use BMW OEM or go to a NAPA auto store and buy Pentosin NF, it is the same product and also blue. This goes for all BMW bikes.
There used to be a kit for the older overflow bottles that just had a hole, Consisted of a hose. Just find some rubber auto type hose that is a tiny bit larger than the hole so it will snug in and lead it up a foot and tie wrap it off. Or buy the new style tank. And yes one fastener is normally missing.
Title: Re: Coolant leak
Post by: MA413 on March 13, 2019, 06:07:25 PM
*Originally Posted by beech [+]
Don't use "good old antifreeze" either use BMW OEM or go to a NAPA auto store and buy Pentosin NF, it is the same product and also blue. This goes for all BMW bikes.
There used to be a kit for the older overflow bottles that just had a hole, Consisted of a hose. Just find some rubber auto type hose that is a tiny bit larger than the hole so it will snug in and lead it up a foot and tie wrap it off. Or buy the new style tank. And yes one fastener is normally missing.
I appreciate the heads up.  I ended up filling the over flow bottle with distilled water as nrthrnbikr suggested to play it safe.  Took her for a spin and not leaks that Iím aware of.  Fan kicked in at 208F so I couldnít see a reaction @212F IF it was to boil over will sitting idle.  I do have the overflow bottle with cap and tube thankfully so all is good. 
Title: Re: Coolant leak
Post by: Stellar on March 18, 2019, 11:10:13 AM
I had the same problem on my 2014 when she was only 12 mnths old, fluid leaked down the outside of the hose, radiator cap from memory.

Never happened since, regularly run around 103 deg c in city work in summer, 30 c day and quickly cools back to around 74 c on the open road .

You should never mix coolants, out here we have red or green, if you mix them you will end up with a radiator full of " porridge " 
Title: Re: Coolant leak
Post by: MA413 on March 18, 2019, 11:18:49 AM
Thankfully, no issues since topping it off with distilled water.  Still canít figure how the cap came loose.  Glad I caught it before it got worse.