Right were do i start... my gs500f 2005 model
I left my bike under cover outside for a few months during the winter and when i went back on it everything was fine for the first mile, then here is a list of what went and still is wrong with the bike
1. the bike lost all power with max speed of 50 mph
2. the exhaust went burning hot with fire coming out of it
I managed to get it home and thinking it was condensation in my carbs i drained all the petrol out through both carbs and put in new petrol, but that did nothing so i changed the plugs thinking it was only firing on one plug.
These did nothing as i still have no power and after a mile the exhaust is so warm that when you look into it it is like molted lava and you can see the bafflers and all glowing, the heat is so extreme..
The only unusual thing i have noticed is that where the pipes branch from the engine is that the exhaust side is burning RED hot the other branch side is cold

Thanks in advance for any help or info on this 

what color were your plugs?

Quote from: jenkins on April 26, 2009, 12:34:55 PM
I managed to get it home and thinking it was condensation in my carbs i drained all the petrol out through both carbs and put in new petrol, but that did nothing so i changed the plugs thinking it was only firing on one plug.

Draining probably didn't do the trick.
Gas left for that long, will leave a glue like residue. I would clean the carbs.

Quote from: joshr08 on April 26, 2009, 01:13:11 PM
what color were your plugs?

I had a mate to clean out carbs and that didnt work....


The new plugs where NGK 4929 DPR8EA-9  the ones i had taken out looked burned i have uped a pic for you to see

to me left one looks a bit lean and right one looks a little rich

Quote from: joshr08 on April 26, 2009, 01:41:35 PM
to me left one looks a bit lean and right one looks a little rich

I beleive that plug came out from the carb the side the exhaust is on.... does it mean anything as im not very  mechanicaly minded lolk

looks like carbs need some adjusting but with your discription of the exhaust issue im not to sure on that but i wouldnt drive it until you get it fixed you could melt it down.  im not sure if an exhaust valve sticking open will cause this or not.  ill let someone else help im sure someone has had something similar to this on there bike.

Thanks for your help... Hope someone out there can help me

running lean (as in the left plug) can cause a lot of heat in the engine, but I'm not sure how that heat would flame out the exhaust... yikes

Quote from: jenkins on April 26, 2009, 12:34:55 PM
Right were do i start... my gs500f 2005 model
I left my bike under cover outside for a few months during the winter and when i went back on it everything was fine for the first mile, then here is a list of what went and still is wrong with the bike
1. the bike lost all power with max speed of 50 mph
2. the exhaust went burning hot with fire coming out of it
I managed to get it home and thinking it was condensation in my carbs i drained all the petrol out through both carbs and put in new petrol, but that did nothing so i changed the plugs thinking it was only firing on one plug.
These did nothing as i still have no power and after a mile the exhaust is so warm that when you look into it it is like molted lava and you can see the bafflers and all glowing, the heat is so extreme..
The only unusual thing i have noticed is that where the pipes branch from the engine is that the exhaust side is burning RED hot the other branch side is cold

Thanks in advance for any help or info on this 

Sounds like a bike running on one cylinder, I've had a cylinder cut out and it is hard to get it over 40-50 mph on one cylinder.  Could be carbs, coils, or pickups causing one cylinder not to fire.  No other explanation for one hot and one cold head pipes I think.  First make sure the plug wires are tight in the coils before checking further.  If it will start and idle pull off a plug wire from a plug.  If it stops it was running on that cylinder.  Put back on and restart and pull the other plug wire.  If it doesn't stop running or change speed its running on the other cylinder only.

Another thought, more than a few bikers have reported finding some small critters have nested in their air filters or muflers during long winter storage, make sure there are none in yours.  Maybe you're seeing a burning nest in your muffler.   

Like others have said, my best guess would be that you're running a one-cylinder-wonder right now, and that the fuel mixture from the cylinder that isn't firing is being pushed into the exhaust where it is igniting and burning down your headers all the way to the muffler. But I'm no mechanic so don't take my word on it.

A quickie and cheap way to test the one-cylinder hypothesis is to start the bike, then pull the plug from the suspected bad cylinder.  If it's not going, nothing should change.  Put it back and pull the other one, and the bike shuold die immediately.

Quote from: Roadstergal on April 27, 2009, 10:48:24 AM
A quickie and cheap way to test the one-cylinder hypothesis is to start the bike, then pull the plug from the suspected bad cylinder.  If it's not going, nothing should change.  Put it back and pull the other one, and the bike shuold die immediately.

But first just touch the exhaust headers and see if anyone is cold....

Quote from: lamoun on April 27, 2009, 10:23:46 PM

Quote from: Roadstergal on April 27, 2009, 10:48:24 AM
A quickie and cheap way to test the one-cylinder hypothesis is to start the bike, then pull the plug from the suspected bad cylinder.  If it's not going, nothing should change.  Put it back and pull the other one, and the bike shuold die immediately.

But first just touch the exhaust headers and see if anyone is cold....

Jenkins reported one hot pipe and one cold pipe in his first post:

Quote from: jenkins on April 26, 2009, 12:34:55 PM
...................................The only unusual thing i have noticed is that where the pipes branch from the engine is that the exhaust side is burning RED hot the other branch side is cold

Thanks in advance for any help or info on this 

The plug on the right is the cyllinder thats not firing.

Quote from: Weston on April 28, 2009, 08:41:30 AM
The plug on the right is the cyllinder thats not firing.

Yeah, it looks brand spankin' new, looks like it has never fired...

Quote from: fred on April 28, 2009, 04:51:40 PM

Quote from: Weston on April 28, 2009, 08:41:30 AM
The plug on the right is the cyllinder thats not firing.

Yeah, it looks brand spankin' new, looks like it has never fired...

it looks nothing like brand new, its all burned
thanks for all the help gys ill be trying them theweeken especially the electrics to the coil