Advanced timing can cause that to happen
The fuel mixtue has gone lean.
The turbocharger turbine housing and exhaust manifold on any state of the art high horsepower (per litre of displacement) diesel engine will glow red as it approaches full load condition.
Red is considered a hot colour because the hot embers of a fire glow red.
hi i have a cuz that is working on a 87 ford turk and he says his manifold gets hot and turns red and i was woundering why that is
Red stars are cooler than stars of other colors but are still quite hot, which is why the glow red.
When some objects get hot enough, they glow, given off a faint red light . If they get even hotter, the glow turns into white light. The objects are said to be white light
Excessive high idle Excessive lean mixture.
Red would be nice because red is related to hot water, Any color will do.
Any substance heated to a high enough temperature will begin to glow, as the electrons in its atoms are knocked into higher orbits and then fall back (they release energy in the form of light as they fall back). The lowest energy electrons that produce visible light produce low frequency, long-wavelength light, and that's red. So when something is hot enough to glow, it first glows red, then yellow-orange, and finally white (as it begins to glow in all colors). That's why candle flames glow red, but welding torches glow white; big old cold stars like Betelgeuse are red but hot new ones like Procyon glow blue-white; light bulb filaments, if you turn the power way down, glow red (because they don't get enough energy to glow white). So if you are heating something up in a flame or with electric current, "red hot" is the point where it's just starting to glow. (That's pretty hot!) Probably the place where people noticed it most in the old days was at the blacksmith's shop, where iron that was glowing red was hot enough (and therefore soft enough) to shape and bend with hammers and tongs on the anvil, or maybe among cowboys, where a red-hot iron was hot enough to leave a clean sterile burn that was less likely to get infected when you branded cattle.
exhaust?
The exhaust gasses pass though there, and they're really hot.