Overheating K1200LT - BMW Luxury Touring Community
 
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post #1 of 8 Old Sep 11th, 2011, 10:19 am Thread Starter
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Overheating K1200LT

Good afternoon all...

Yet another perfect solution found on this forum

Yesterday I started up my K12 for my journey home from work, having left her idling for 10-15 minutes I returned to find that she had wet herself....Poor girl, there she was with a damp patch about a foot in diameter right between her wheels.

I lifted the seat and almost got a blast from the super soaker nozzle on the expansion tank, what the buggery was causing that I thought !!

So, i took the gamble that once riding she would calm down and get me home(130 miles ) and she did... However, when I went out on her later yesterday, oh she wasn't a happy girl at all, temperature was a rising, fans were constantly on and she was having a hissy fit underneath my seat.

I got home and flicked on the Lappy and straight into this forum, and there were a couple of scenarios but the diagnosis that fitted the problem was quite simple....

Replace the ~ Radiator Cap

As BMW parts are closed here on Sundays I had to find a temporary replacement.. BMW caps are 1.5 bar but all I could find was a 0.9 bar. So, off I went home and fitted it to the radiator, and hey presto... no more gushing expansion bottle !!

I shall get a 1.5 bar asap

Thanks you all out there for yet another perfect fix !!

Panman
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post #2 of 8 Old Sep 11th, 2011, 3:18 pm
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Re: Overheating K1200LT

1.5 bar?

Thats a lot of pressure.

A couple of years ago was on the way to Sturgis and had about the same experience you had.

Seems a cap for a Chevy little 3 cylinder whatever they are works just fine. Still there and holding.

Go to a car parts store and ask for a radiator cap for a BMW motorcycle will get you some real stoopid looks. Put your old one on the counter and mumble about a Chevy, or Ford I'd guess, a 2002 model year and they'll go looking and match it up.

Think a .9 bar one will be fine as long as you don't try to cross the Sahara desert and get caught in stopped traffic.

B D R
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post #3 of 8 Old Sep 11th, 2011, 5:16 pm
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Re: Overheating K1200LT

I don't recommend letting her idle that long it just waists fuel and serves no useful purpose. Do that with an oil head boxer and you will destroy the engine.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
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Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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post #4 of 8 Old Sep 11th, 2011, 5:30 pm
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Re: Overheating K1200LT

Yup - idling that long is not recommended by the manufacturer. Book sez, under "Starting", 'Caution' - "Do not allow the engine to idle with the motorcycle at a standstill - risk of overheating. Avoid even short warm-up periods. Ride away immediately after starting the engine."
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post #5 of 8 Old Sep 12th, 2011, 6:47 am
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Re: Overheating K1200LT

Last spring I decided to try something to keep my LT running cooler down here in the land of never ending heat..........
After changing coolant (always use BMW coolant) I added a cap full of Redline Water Wetter........................................
results = temp. stays always a fraction below the "middle" tick........while returning home from a failede attempt to get to Maine last week, I found myself in Downtown Pittsburg at 4:30 PM..................stop, go, stop, go..........no problem.

Allan..Illinois, Oregon, Arkansas, and tomorrow the Universe
2003 K1200LT trike - Starfighter
2004 R1150RTP - Combat Touring
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post #6 of 8 Old Sep 12th, 2011, 9:56 am
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Re: Overheating K1200LT

Quote:
Originally Posted by Dick
Yup - idling that long is not recommended by the manufacturer. Book sez, under "Starting", 'Caution' - "Do not allow the engine to idle with the motorcycle at a standstill - risk of overheating. Avoid even short warm-up periods. Ride away immediately after starting the engine."
I don't get this. All internal combustion engines are supposed to warm a little before any use of the throttle or being placed under a load.
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post #7 of 8 Old Sep 12th, 2011, 10:27 am
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Re: Overheating K1200LT

Quote:
Originally Posted by rswisher
I don't get this. All internal combustion engines are supposed to warm a little before any use of the throttle or being placed under a load.
Old school, like 3,000 mile oil changes -- just not necessary anymore. If you have oil pressure, you're good to go.

Welcome to the 21st Century.

Mark Neblett
Fairfax, VA
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post #8 of 8 Old Sep 13th, 2011, 2:55 pm Thread Starter
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Re: Overheating K1200LT

Quote:
Originally Posted by jzeiler
I don't recommend letting her idle that long it just waists fuel and serves no useful purpose. Do that with an oil head boxer and you will destroy the engine.
Noted... I wont be doing that again...It was just a habit as my journey home starts on a motorway(freeway) and always thought warm was better than cold !! Thanks for the tip.
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