Exhaust blowing smoke

First is normal condition (so you don’t have to panic ) and the second is a not so normal condition which should be fixed as soon as possible. One reason for white smoke is very common and completely harmless. Even small amounts of coolant entering the combustion chamber will produce white exhaust smoke. One of the main causes of white exhaust smoke and coolant loss is a cracked or warped cylinder hea a cracked engine block, or head gasket failure caused by overheating. This will cause white smoke , along with the idle issue.

The first think you should check is your air-filter and other intake components like sensors, fuel injectors and the fuel-pressure. Piston Rings are designed to prevent the infiltration of engine oil inside the combustion chamber. Consistent smoke coming from the exhaust most likely indicates a deeper internal problem with the engine. A small puff of smoke during quick acceleration is acceptable with older diesel engines due to a lag before the turbocharger’s air flow can match the increased volume of diesel fuel injected into the cylinders.

A steady stream of white smoke during normal driving conditions points to fuel vapors, or in some cases, raw fuel exiting the exhaust. Worn or defective glow plugs, improper engine timing and defective fuel pump pressure will allow excess fuel to exit the exhaust in the form of white smoke. Smoke coming from a motorcycle exhaust indicates the engine is not running correctly. Typical problems include fuel not being completely burne too much oil or coolant evaporating. If ignore such problems can result in significant engine damage, and being able to identify the origin of the smoke , as quickly as possible, can reduce the risk of a costly repair.

Each engine has valves that open and close. These Valves are manufactured to open mechanically by pressure from a Rocker Arm. They let air and gasoline come into the engine.

Condensation that accumulates inside the exhaust pipes, converter and mufflers can produce a puff of white smoke upon diesel engine start-up. In very cold temperatures, the heated exhaust can freeze into minute fuel droplets when exiting the exhaust and produce a more prolonged emission of white smoke for a very short period of driving time. Many engine problems create abnormal or excessive exhaust smoke. In your engine, fuel is burned in each cylinder, creating exhaust gases. These gases exit through valves in the engine and then flow through the exhaust manifold and into the exhaust pipes.

Leaking valve seals result in blue-gray exhaust smoke. This is because oil is leaking past the seal and into the combustion chamber. These seals allow the intake and exhaust valves to move up and down while providing oil for lubrication.

They must allow just enough to lubricate the valve stem while still preventing seepage into the chamber. Diesel Engines Blowing White Smoke from Exhaust. WHITE SMOKE occurs when raw diesel comes through the exhaust completely intact and unburned.

Some causes of this include. A brand new diesel engine running at full load will experience a little bit of blow -by upon startup. Blow -by is a condition where diesel fuel, air and vapor are pushed past the rings into the crankcase of the engine. Joe Myers 134views.

Blowing white smoke is a red flag for your diesel engine, yet we see this happen all the time to our customers. Exhaust Smoke Types (BLACK, WHITE AND BLUE) Causes - Duration: 11:38. In many cases, white smoke emanating from the tailpipe (often at idle once the engine reached operating temperature) typically means a worn out injector.