Red exhaust when low battery power?

[ronnegard]

This weekend I went for a ride with my bike but the battery power was to bad It was three weeks after charching. I used an other battery for start but after driving 60km it still couldn't start with the battery on the bike. But there was also an other problem, the exhaust pipe on the right was very hot and you could see the red light from it(very hot and smell not good). Can this have to do with the low battery power? Is there a problem with the electronic system because of the low battery power? The sound from the engine was still good but I stop directly. Can some one help me?

(sorry for bad english but i hope you will understand

 

[Timpo]

I doubt the two issues are related.
On my 1200 I have had both.
Poor battery performance was sorted by replacing the stock BMW battery with an Odyssey 535.
And my header pipes glow when the bike has been standing with the engine running for a time.

Timpo.

 

[Snoopy]

If it becomes a problem replace the cat with a straight through. Heat build up is quite a bit less then.

Same on the battery, previous owner fitted one to mine and it starts first time everytime.

 

[Racey]

Exhaust Glow...

I would not think the two problems are linked.

A friend of mine had a similar problem, with his exhaust glowing red hot - to the point it almost melted his rear tyre - on his 1150 GS recently.

The problem was first seen when he had "warmed the bike up" on his drive. But it also did it when the bike was moving - far more than it should have done.

It turned out that he had dislodged or moved (accidentally) the right hand throttle cable.

The engine was receiving far more fuel into it from the right hand side than the left and it was being burned in the catalytic converter... To the point it glowed as hot as it did...

Reseating the cable cured the problem and the bike, which had been running badly also stopped stalling and misfiring...

Just a thought...

 

[Pukmeister]

Air cooled engines rely heavily on the movement of air across the cylinders to provide cooling (no shit sherlock). They have no cooling fan like a water cooled bike with radiator. Leaving them running on the stand for any period is NOT recommended as cylinder temperatures can get very high, resulting in overheating of the oil etc: If you ain't gonna ride it once it is warm, turn the damn thing off.

 

[Dahoum]

I doubt the two issues are related.
On my 1200 I have had both.
Poor battery performance was sorted by replacing the stock BMW battery with an Odyssey 535.
And my header pipes glow when the bike has been standing with the engine running for a time.

Timpo.

wot e sed

 

[ronnegard]

Thank's for all the answers!

I will change my battery today but still I don't now whats wrong with the exhaust? The bike was not running for a long time on the stand, only one or max two minutes, but still it was glowing???

 

[PhilBolton]

A weak mixture will produce an over hot exhaust, easily enough to make the exhaust pipe glow red.
I've experienced this, but it was a single cylinder Honda - so it also ran very badly.
Maybe on a twin the bad running can be harder to detect if the other cylinder is fuelling OK
What I'm suggesting is, that maybe the injector/throttle body on the "hot" cylinder is faulty, and probably the thing to do is get a dealer to interrogate the computer and see if any fault codes are logged.

Then again, maybe I'm talking shite.

Phil

 

[Pukmeister]

FWIW my 1200 is now 5 years old and has never suffered from glowing exhaust pipes, no matter how it is ridden.

 

[ExpatinIstanbul]

My mate had a similar problem with his 1150, the left hand downpipe got much hotter than the right. His problem was simply the HT lead had come a bit loose on the cylinder head, so it wasn't firing properly, or some such sh1t....i'd give that a check first as it's a very simple thing to do.

 

[ronnegard]

FWIW my 1200 is now 5 years old and has never suffered from glowing exhaust pipes, no matter how it is ridden.

Yes I talk to mechanic guy and he also sad to me that this is not a problem. I have never seen it before but perhaps I have to live with it from now?