) measures the ratio of the actual air-fuel mixture to the ideal (stoichiometric) mixture. Stoichiometric (
A leak near the sensor can pull in outside air, tricking the sensor into reading lean ( ) while the engine is actually over-fueling. EXHAUST PIPE BLACK SMOKE 1.42
A Lambda reading of is technically a "lean" condition, which usually does not produce black smoke. However, seeing black smoke alongside such a high reading suggests specific mechanical failures: ) measures the ratio of the actual air-fuel
If your vehicle is exhibiting black smoke, consider these primary culprits: EXHAUST PIPE BLACK SMOKE 1.42
A malfunctioning Mass Air Flow (MAF) or Oxygen ( O2cap O sub 2 ) sensor can send incorrect data to the ECU.
High pressure can force too much fuel through the injectors.