Mass air flow sensor white smoke

If the smoke is more of a bluish gray and has no smell, it is probably oil smoke from worn valve guides, cylinder walls, or piston rings allowing engine oil to enter a cylinder and be burned. A faulty MAF sensor can cause your vehicle to run too rich or run too lean. You’ll notice if the tailpipes eject black smoke or when the engine runs rough or backfires. I noticed a lot of smoke , no power, intake temp on bully dog went up to 2deg.

The codes both indicate. Cleaned MAF sensor with appro cleaner. Mass air flow sensor problems Problems mass air flow sensors are very common. Often this happens when an old or improperly installed air filter allows some unfiltered air into the engine or when oil from an oil-soaked air filter contaminates the air flow sensor. Since this sensor measures the actual amount of air entering the motor, when it fails, the engine control module (ECM) takes the wrong information and delivers incorrect volumes of fuel to the cylinders.

A decrease in airflow causes the MAF sensor element to get warmer, decreasing the voltage and reducing the fuel flow. Mass Airflow Sensors (MAF) have the responsibility of reporting the amount of air entering the engine to the Powertrain Control Module (PCM). There are several designs of MAF sensors, but the most common by far is the hot wire MAF sensor. If you get black smoke from a fuel-injected petrol engine, it is most likely caused by one or more faulty sensors, and the prime suspects are the oxygen sensor and the mass air flow (MAF) sensor. When the flow of air enters the fuel injection system of the engine, the mass air flow sensor will analyze how much air is flowing in there.

It will then relay this information back to the engine control unit. This information is then used by the ECU to calculate the amount of fuel needed for the correct air -fuel mixture. If the mass air flow sensor has failed or needs to be cleane this can cause especially rich or lean fuel mixtures.

In that case, the car’s computer cannot control the fuel-to- air ratio because the sensor does not send any information to it. As a result, the engine either halts or idles roughly. Replacing the MAF sensor is the only solution to this complication.

A bad Osensor would make the engine either go full rich or lean. Neither would cause white smoke. Labor costs are estimated between $and $while parts are priced between $2and $295. A problem with the mass air flow sensor often causes the ”check engine” or ”service engine soon” light in the vehicle instrument panel to illuminate.

These lights come on when the engine computer detects some fault in one of the components of the emission control system. If you have a Vivaro, Primastar, or Trafic van and have no power at low RPM, general rough running, and have the check engine light illuminated on the dashboar there are several things that you need to rule out to track down and solve the problem. I think it likely that it has no relation to using waste veg oil for fuel. For example, in some Mazda Skyactiv engines, a failed mass air flow sensor could cause the engine to crank but not to start.

When operating properly, the Osensor cannot cause your engine to smoke. If the sensor is defective, however, it can cause your car to run either rich or lean. If your car is running excessively rich, you may notice black smoke coming from your tailpipe. Easy step by step guide on how to service an automotive mass air flow sensor , though appearances may vary the process is similar for most vehicles. Difficulty Scale: of Begin with the car on level groun in park with the emergency brake set.

On some vehicles it may not do much damage. However, everything in a car that determines air fuel mix has effects on fuel economy. There are various designs of MAF sensors, but the most common by far is the hot wire MAF sensor.