white exhaust smoke - audi a3 problems

Smoke coming from exhaust 
The Exhaust Pipe Of Audi A6 Produces A Lot Of Smoke In A Hard Acceleration

Smoke from exhaust 

Fault Analysis: simply a mixer too thick make the black smoke by normal imagination, the reason why are abnormal air-fuel ratio ( value supplying inaccurate signal, sensor failure, the environment-fuel ratio cannot instantly adjust, the fuel injection growing, leading to unstable engine idling and acceleration of black smoke), drip phenomenon (injector atomization and sealability), the ignition isn't accurate (imbalance), the spark plug gap is simply too small (creating an excessive amount of carbon), cylinder pressure, oil pressure, fuel pump and fuel pressure regulator, ignition coil, utility lines.

p0411 audi 

 Fault diagnosis: VAG5052 identify the fault storage of engine control unit to exhibit the hard to rely on signal of ventilation meter is incidental, and also the sensor short circuit to ground. The sensor data stream is .8% having a current of .2. The standard data stream is -10% - 10% up and lower a minimum of 3% fluctuations, normal current data stream is .1 - 1 up and lower a minimum of 3% fluctuations. So replace sensor, create a fundamental group of electronic control systems, restart the engine, and delay pills work well. Operate a couple of kilometers to exhibit all normal, and VAG5052 shows the information stream are common,as well.

Oil consumption test - audi oil consumption 

 The following day the proprietors discover that there's still an indication of smoke. With VAG5052 discovering system, you will find no fault code, and knowledge stream examination is common too. So judge that non-electric control area of the components cannot be supervised, since the engine control unit can monitor only a few of the sensors and actuators, so recheck again based on this type of thinking.

Cat back

 Oil gasket leak 

First, look into the engine cylinder pressure to become normal. So use gasoline pressure gauge to determine the oil pressure, fuel pump and fuel pressure regulator will also be normal. Then look into the ignition coil, utility lines, spark plugs that are normal. Last check fuel injection, atomization and it is rigidity nozzle to locate a lot grime. So according to consider your experience, look into the carbon depositing of combustion chamber cylinder wall, not remarkably, you will find lots of carbon on combustion chamber cylinder wall, process carbon, after which possess a commissioning, trouble solved.

Oil leak causes 

 Summary: right from the start the concept is impeccable, although not best to consider the abnormal work from the value which will make the environment-fuel ratio not instantly modified to ensure that the fuel injection quantity increase and you will find a great deal carbon deposits within the combustion chamber cylinder wall. Even though the sensor alternative correct the environment-fuel ratio however the carbon around the cylinder wall aren't washed to create gasoline not completely combined with the environment.