One cylinder a lot hotter than the other

[BrianC]

I've just noticed that the RH cylinder on my 1150GS is about 50 degrees hotter than the other. This overheating seems to be worst when using the choke.
Anybody got any ideas what's wrong?

 

[millard]

coz it's set back a wee bit from the LH one meaning the cooling air reaches it later

 

[John Armstrong]

Hi

Checked the "choke" is even on both sides?

BTW how do you know it's 50 degrees warmer and how long are you keeping the "choke" on after start up?

Any other running problems?

When did you last have the balance of the throttles checked?

 

[Timpo]

I've just noticed that the RH cylinder on my 1150GS is about 50 degrees hotter than the other. This overheating seems to be worst when using the choke.
Anybody got any ideas what's wrong?

How can it be 'overheating' when the use of the choke is for when the engine is not at normal operating temperature?

Timpo.

 

[MattW]

Firstly I'm intrigued as to how you know it's 50 degrees hotter?

That said, I would do the usual checks:
Valve clearances, plugs / ht leads, throttle body balance etc

You should also be aware that the choke isn't a choke in the traditional sense, it's just a micro throttle that cracks open the throttle butterflies slightly - the fuel computer takes care of the mixture using various inputs (temperature, exhaust oxygen content etc)

 

[Steptoe]

.
Anybody got any ideas what's wrong?

Have you got a mirror

 

[Steve]

Have you got a mirror

 

[BrianC]

Hi

Checked the "choke" is even on both sides?

BTW how do you know it's 50 degrees warmer and how long are you keeping the "choke" on after start up?

Any other running problems?

When did you last have the balance of the throttles checked?

Thanks John. I measured the temperatures with a chip fat thermometer. The engine is running as smoothly as ever. Sounds like it could be the throttle balance but I'd have thought if they'd been out of balance the engine would have run lumpy.

 

[Timpo]

I measured the temperatures with a chip fat thermometer.

Are you serious...........?

Timpo.

 

[ONYERBIKE]

Never mind mate

 

[KMD]

The engine is running as smoothly as ever.

You could be looking for a problem where one does not exist. If it aint broke, don't try to fix it. If it runs ok, rides ok, and pulls ok, leave it alone.It's probably fine.

 

[BrianC]

You could be looking for a problem where one does not exist. If it aint broke, don't try to fix it. If it runs ok, rides ok, and pulls ok, leave it alone.It's probably fine.

I think you're right. I'll leave well alone. Ta.

 

[ELIMINATOR]

Hmmm, I'm intrigued, now tomorrow I'll have to find the digital thermomter with the remote probe and look see myself.

 

[D6]

Hmmm, I'm intrigued, now tomorrow I'll have to find the digital thermomter with the remote probe and look see myself.

remote probe??sounds painfull

 

[ELIMINATOR]

It's OK as long as the welders don't see it.

 

[Comfy Old Boots]

have you checked the temp after a 30/40 mile ride? With the chip temp thingy

 

[davegs]

Over heating

take no notice of the frivolity offered above, are you sure your not riding around in r/h circles? if so the outer pot is going faster than the inner thus better air flow.
Dave gs.

 

[B Murr]

I've just noticed that the RH cylinder on my 1150GS is about 50 degrees hotter than the other. This overheating seems to be worst when using the choke.
Anybody got any ideas what's wrong?

50 degrees hardly worth worrying about is it after all humans can still live and breath at temps in high 40's? Does the oil circulate through one cylinder before moving on to the next? and hence not be so cool when it reaches the 2nd cylinder. Is one side sticking out the shed door in breeze while the other is in warmth of shed? Is the sun shining on one side?