Reasons for a smoking engine include a clogged air filter, blocked manifold, oil leaking on to the exhaust system, leaking head gasket or a cracked cylinder head. Regardless of the reason, it is important to visit a mechanic if a car engine starts to smoke, or permanent damage can happen.Know More
If the engine is giving off white smoke in a gasoline engine, it is likelycoolant or water being vaporized in the combustion chamber. This can be caused by the head gasket leaking, a cracked engine block or cracked cylinder head. In a diesel vehicle, white smoke can mean that the fuel is not burning due to a faulty injection system, incorrect timing or the engine overheating. However, in both engine types, it could also be due to the engine not being warm enough.
Black or gray smoke in any engine can be caused by fuel combustion remaining incomplete. Causes for all engines include oil leaking onto the exhaust system, a clogged air filter or incorrectly timed ignition. In a gasoline engine, it can be caused by a blocked manifold or carburetor, choke, fuel injection or emission system malfunction. In a diesel engine, it can be caused by a faulty injection system, the wrong grade of fuel, incorrect timing or the engine overheating.
Blue smoke is due to engine oil being burned or atomized and can be caused by worn piston rings, valves or cylinders. In a gasoline engine, it can also be caused by oil leaking into the combustion chamber, and in a diesel engine, it can be caused by high levels of engine oil.Learn more about Engine
Signs that a car engine is malfunctioning include decreased fuel economy, reduced acceleration, operation at a higher temperature and, ultimately, failure to operate. On the dashboard, the "Check Engine" light shows the owner that the engine has a serious problem requiring immediate attention from a mechanic.Full Answer >
Ignition, fuel and compression are the three primary reasons why a car might crank, but the engine does not turn over and start the vehicle. An engine that does not crank or cranks slowly is pointing at a starter- or battery-related problem.Full Answer >
White smoke occurs in a diesel engine when the diesel fuel goes through the engine and reaches the exhaust without having been burned. This typically occurs due to the engine being too cool to burn the fuel, often resulting from low compression in one cylinder, problems with the fuel injection timing or a defective fuel injector.Full Answer >
An engine overhaul is a comprehensive engine tune-up that involves removing and disassembling a vehicle's engine, testing all the components, cleaning and replacing parts as needed and then reassembling the engine. This is done to improve vehicle performance and prolong the life of the engine.Full Answer >