the valve guides could be worn out
The carburetor is running fuel rich and needs adjustment. If it were valve guides or rings the smoke would be blue
Injectors, timing, low cylinder pressure.
Excessive revving of an engine causes overpressure in the crankcase. It causes unhealthy expansion in the pistons and the valves.
Unburned fuel in the exhaust system causes the backfire from the exhaust pipe.
Water vapour due to condensation in the exhaust pipe.
It is timed incorrectly or plug wires are installed incorrectly.
"lead" is the Pollutant from motor car exhaust that causes mental disease.
No who, but what. All internal combustion engines emit exhaust fumes.
Two big causes of noise pollution are vehicles (cars, trucks, car horns, revving engines, planes, ect) and loud music.
it makes you exhaust louder or " meaner " and some say it causes an increase in horsepower
bad or going bad alternator belt
Broke rings on pistons
The smudge in the exhaust pipe is just build up reside from the exhaust. It can be very?æ harmful to people.?æ
That is called condensation. When you start the engine the exhaust system/pipes are cold. When the heat from the engine exhaust passes through the exhaust it makes it sweat. That is normal.
catalytic convertor breaking down, or exhaust touching body or chasis of car
Revving up and down is usually a symptom of a dirty air filter.
nitrogen oxides from car exhaust
the exhaust and the seats.
because of low battery voltage
Defective exhaust system.
Could be a diesel? If not then replace your oxygen sensor on your exhaust. A bad oxygen sensor causes the exhaust smoke to be dark in color.
The exhaust is stainless steel. Heat causes stainless steel to turn blue.
one of the causes is bad low quality fuel
NO it will not. Over revving engine, Rocker are adjusted to tight, Bad lifter. These are some common causes of that.
old junky exhaust systems have a lot of debris that catchs fire with high exhaust temperatures
The two most common causes are either an overheating issue or over revving the engine. If over heating is the cause then the head could also be warped.