Author Topic: Overheating.  (Read 714 times)

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Offline nightrider

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Overheating.
« on: April 16, 2018, 05:29:26 pm »
My bike cut out in heavy traffic today. I had been doing some slow filtering; about 5mph stuff and the bike cut out. I hesitated for a bit then started but then ran slightly rough. To make matters worse I was still stuck in slow moving traffic and I noticed at last that the bike was running hot. Pulling in to the car park it stopped again and again started after a few hesitant seconds.
A few hours later I rode home with no problems. The ambient temperature was about 14c. What do you think it could be?
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Offline raesewell

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Re: Overheating.
« Reply #1 on: April 16, 2018, 05:37:45 pm »
A blocked radiator that needs cleaning or replacing  ;)
But looking on the bright side you don't have the hot start issue.  ???

Offline nightrider

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Re: Overheating.
« Reply #2 on: April 16, 2018, 08:27:36 pm »
Do you need to remove the radiator to clean it?
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Offline raesewell

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Re: Overheating.
« Reply #3 on: April 16, 2018, 08:40:00 pm »
It is possible to clean it without removal but if it's really blocked then removal is the only way and then it's not a guarantee that it can be cleaned sufficiently. It's been covered before just do a forum search.

Offline nightrider

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Re: Overheating.
« Reply #4 on: April 16, 2018, 09:25:52 pm »
Thank you.
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Offline TomL

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Re: Overheating.
« Reply #5 on: April 16, 2018, 10:12:19 pm »
Odds on that you will need a new radiator. Don't forget that it has to be vacuum filled.
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Offline nightrider

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Re: Overheating.
« Reply #6 on: April 17, 2018, 07:52:46 am »
Do you think that they will replace it under the extended warranty? If not perhaps put a second hand one on.
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Offline black-k1

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Re: Overheating.
« Reply #7 on: April 17, 2018, 08:35:54 am »
Do you think that they will replace it under the extended warranty? If not perhaps put a second hand one on.

It's not covered under the extended warranty. (I've just asked that question at the dealers - guess why??? My bike is 25 months old!). There's little point in going second hand. They ALL bung up and need replacing so any second hand one will just be an unknown distance down the path of needing replacement. You could get lucky, if you can actually find a second hand radiator, but likewise, you may well end up in the same situation before the end of the summer.
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Offline Eyore

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Re: Overheating.
« Reply #8 on: April 17, 2018, 08:38:50 am »
And don't forget to fit a fender extender to stop the dirt being thrown onto the new/replacement rad.
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Offline raesewell

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Re: Overheating.
« Reply #9 on: April 17, 2018, 08:45:05 am »
As David said, it's not covered under warranty and it's gonna cost ya in excess of 600 quid and as Tom says if you are going to do it yourself the cooling system has to be vacuum filled. The joys of BMW K ownership.

Offline nightrider

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Re: Overheating.
« Reply #10 on: April 17, 2018, 04:33:42 pm »
I've only owned this bike for about ten weeks. If I go ahead and have it fixed,what's the chance of something else going wrong this year?
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Offline raesewell

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Re: Overheating.
« Reply #11 on: April 17, 2018, 04:51:37 pm »
Other things may go wrong with the bike but most other stuff is covered by the warranty.

Offline richtea

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Re: Overheating.
« Reply #12 on: April 17, 2018, 05:19:09 pm »
If you bought it from a BMW dealer 10 weeks ago, I'd push hard for some 'goodwill' compensation.
If you bought it privately or from a non-BMW dealer, that's probably not an option.

In terms of other things going wrong, as Rae says, most things are covered by the warranty.
The two 'big ones' that aren't are:
- radiator, as discussed
- ESA suspension is not covered beyond 30k miles

Having said that, my bike is at 36k miles, and no problems on either front. Touch wood.

I'm not sure if you can bring a radiator back from the dead, so to speak. If its cleaned (as in painstakingly straighten out the fins), will it function correctlyagain?
Brian, or others may well know whether it's something more terminal.


Offline nightrider

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Re: Overheating.
« Reply #13 on: April 17, 2018, 05:35:52 pm »
I will have to have it fixed any way,keeper or non keeper, if it's a no keeper I might put a second-hand one on. If it's a keeper ,and I'm impressed with the bike otherwise it will be shiny new one
If the ESA goes am I right in believing that I could fit a non ESA aftermarket springy thingy?
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Offline Expo

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Re: Overheating.
« Reply #14 on: April 17, 2018, 05:37:34 pm »
As Richard says, but if non of that is an option then try and clean the radiator. Remove both side fairings and the radiator plastic grill. The fan has four mounting screws (one of which is fiddly to get at due to the proximity of the rad pipe). Spray clean water from the back of the rad using a washing up bowl to catch water/debris. I use modified garden spray. Concentrate around bottom of rad as this is the area of most #hite accumulation. Then using a small cable/zip tie  ;D straighten out any bent vanes.
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