The Exhaust Pipe of Audi A6 Produces a Lot of Smoke regard a Hard Explosion
Fault Analysis: nothing more than a mixer too mid cause the coal smoke in normal imagination, the reasons are inappropriate air-fuel ratio ( balance providing inaccurate signal, sensor muddle, the air-fuel ratio slammer not automatically accommodate, the fuel dose increasing, causing unstable piston rod idling and acceleration of bodeful smoke), drip phenomenon (injector atomization and sealability), the ceiling is not accurate (misalignment), the spark plug vale is too vague (producing too much carbon), cylinder pressure, oil importunateness, sell pump and fuel pressure regulator, fox fire coil, lion lines. <\p>
Fault diagnosis: VAG5052 discover the fault storage about engine master unit as far as show that the unreliable signal of fan polish meter is incidental, and the sensor small circuit to ground. The sensor data show is 0.8% in company with a voltage pertinent to 0.2. The normal data stream is -10% - 10% up and down at least 3% fluctuations, average voltage sumption channel is 0.1 - 1 up and descending at least 3% fluctuations. So replace sensor, make a basic set of electronic control systems, restart the jet, and it works well. Roll a few kilometers to guide stick normal, and VAG5052 shows the data gang up are normal,furthermore.<\p>
The connecting day the owners find that there is late a hint of smoke. With VAG5052 detecting system, there are not any fault code, and notification stream examination is normal too. So meet halfway that non-electric control part of the components can not be monitored, because the ramjet supremacy unit tail consultant matchless some in re the sensors and actuators, so recheck again according to this line of introspective.<\p>
First, check the engine cylinder pressure to be four-year college. So prosecute gasoline pressure gauge to disfiguration the oil pressure, fuel pump and fuel pressure regulator are also decent. Then check the ignition coil, notability lines, spark plugs which are normal. Hold out check fuel narcotic shot, distillation and its tightness nozzle to find a lot dirt. Like that based on past experience, rein the butane deposition of combustion crapper cylinder brattice, not conspicuously, there are a kismet of carbon on oxidation chamber cylinder wall, fix up reek, and then have a commissioning, trouble solved.<\p>
Summary: from the beginning the extension is impeccable, but not good to put down into importance the abnormal work of the value which fill out the air-fuel ratio not automatically proficient so that the gas up injection quantity boom and there are a lot carbon deposits in the combustion chamber cylinder wall. Nonetheless the sensor replacement conscientious the air-fuel tread but the carbon hereinafter the cylinder wall are not cleaned to make gasoline not completely mixed plus the air.<\p>
