there is only one reason that i know of to make exhaust manifolds turn red the timing on engine is to far advanced have the engine timed .if the distributer is loose this will cause it if distributer is not loose, maybe the automatioc advance and retard on distribuor are not working. this is sometimes caused by clogged vaccuum line going to the distributor
I dirt track race and mine did it once it was because it was running to lean.
Normally a blocked catalytic converter or a blocked exhaust will cause that problem. Back pressure, means the gasses cannot escape. thus causing the manifolds to glow.
the timing is incorrect on your engine, to glow bright red the timing is to far advanced. have the timing reset and you will be good to go.
The engine runs fast, won't idle down, and many times the exhaust manifolds will glow red hot from the lean mixture.
I'm not familiar with a Kia, but the first thing that I would suspect on a 12 year old car would be a blocked catalytic converter. Also, check that the exhaust system isn't crushed or collapsed anywhere restricting the exhaust flow.
The exhaust manifolds on a normal, properly tuned vehicle engine WILL NOT overheat to the point they glow unless you have a turbo setup. If this happens you have improper fuel mixture or the timing is off. Even a turbo setup should only have a small bit of orange glow and that's only if you're running the engine hard. This will help you: http://www.hotrodders.com/forum/rebuilt-350-headers-get-bright-orange-170314.html
Advanced timing can cause that to happen
The catalytic convertor might be at fault.
yes actually glow worms have a chemical reaction in their behind and this causes a glow this glow attracts other insects towards the glow worms so that they can eat them
the computer tells it to glow.
The exhaust gasses pass though there, and they're really hot.
Timing is slowed.