The block is where the cylinders and coolant passageways are located, and the head is where the valves and rocker arms reside. An engine essentially consists of an engine block and a cylinder head. The following are the most common culprits:īlown head gasket: This is not so great news, but your engine’s structural integrity has most likely not been compromised, so it’s not ruinous. White exhaust smoke often happens when an engine burns coolant that has leaked into the combustion chamber. If it continues well after start-up, then you may have serious trouble. This is a common sight when cars, even modern ones, are first started in the morning. The remedy is to repair the fuel injectors.ĭoes the exhaust smoke quickly dissipate after leaving the tailpipe? If so, it is probably the result of condensation building up within your car’s exhaust system. The gas is drawn into the combustion chamber and mixed with a predetermined amount of oxygen to optimize the efficiency of the burn or combustion event. Leaky or clogged fuel injectors: Fuel injectors are small electro-mechanical devices used to spray a predetermined amount of atomized gasoline (a mist of gasoline) into a vehicle’s intake manifold, which is directly in front of the intake valve. The remedy is to replace the fuel pressure regulator. Too much pressure may result in over-fueling, which can make your engine run rough and deliver poor fuel mileage, among other things. If it falls too low, there may not be enough fuel reaching the engine to start it. If the regulator is on the fritz, the pressure will fluctuate outside of the system’s specified range. Two of the most common reasons for this are a malfunctioning fuel pressure regulator or leaky or clogged fuel injectors.īad fuel pressure regulator: A vehicle’s fuel system is designed to work within a specific range of pressure, which is controlled by a fuel pressure regulator. If the problem persists, it’s an indication that your vehicle’s air-to-fuel ratio is askew – specifically, it is burning too rich or more fuel than air. The remedy is simple: replace the filter.
Clogged or dirty air filter: An essential part of a vehicle’s fuel system, an air filter stops airborne contaminants from getting sucked into car’s engine, where they can clog up the works.If that’s the case, here are the likely culprits: If it continues after the car warms up, there’s cause for concern. If your car emits a little black smoke at start-up, but it clears up as the engine warms to operating temperature, don’t worry – that’s normal for some cars. While the presence of exhaust smoke can indicate a serious car malady, there is a silver lining: the color of that tailpipe plume can give an indication of what might be wrong, which helps to generate a quick and efficient diagnosis.īlack exhaust doesn’t always indicate impending doom. Common causes of exhaust smoke, according to its color: Read on for common issues that can cause exhaust smoke. If this ever happens, quickly exit and move far away from the car.Īgain, smoke from the exhaust is nearly always the type of smoke detected in a diagnostic situation, not engine smoke. If the leak is large enough, you will likely see the oil dripping on your driveway or garage floor.Ī fire under the hood would produce smoke, but flames would follow that, resulting in a very dangerous situation. If there is a problem within the engine that produces smoke, that smoke will exit the engine through the exhaust.Ī leaking valve cover gasket might produce smoke caused by oil dripping on a hot manifold.
Smoke is not a good indicator that some malady is brewing within the engine the color of your car’s exhaust is a better diagnostic tool. Smoke rarely comes from the engine bay, and if it does, the issue is typically critical already. First, an important note on engine smoke: If exhaust smoke is visible, you likely have a real problem, and one that will require a skilled auto technician to remedy. If it’s operating in tip-top shape, tailpipe emissions should be nearly undetectable. You can learn a lot about the health and well being of your car from the color of its exhaust. Service type Smoke from engine or exhaust Inspection
0 kommentar(er)
