exhust valve and guid sufficiant ply./exhust valve improper set/advance iginition timing.also locked muffler.fuel,gas, tomuch high flow.
ahmed mirza
neduet
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.
Plugged converter possibly or other exhaust restriction. exhaust is very very hot, because of this, your exaust manifolds/headers are going to get very very hot, especially if you tend to run high RPMs. if everything else like throttle response is fine, i wouldn't worry
Exhaust manifolds should be covered by warranties.
It would depend on the type of vehicle and the size of the motor.
Exhaust manifolds get very hot, it is possible but not a common occurance
The engine runs fast, won't idle down, and many times the exhaust manifolds will glow red hot from the lean mixture.
There are ( 2 ) exhaust manifolds on your 1997 Ford Taurus V6 engine
the catilatic converters could be stopped up.
In the exhaust manifolds & in the exhaust itself
The exhaust manifolds on a 2000 Xterra are bolted onto the side of the engine heads. The manifold carries the engine fumes to the exhaust pipes.
There are ( 2 EXHAUST MANIFOLDS ) on your 1993 Mercury Villager 3.0 liter V6 engine