What Are the Causes of an Oxygen Sensor Detecting Lean Air/Fuel Mixture?

Answer An oxygen sensor is part of an engine's management system and monitors the amount of oxygen present in the engine's exhaust. The engine's computer uses this information to adjust the air-to-fuel ra... Read More »

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Can Lean Fuel Mixture Cause Overheating?

Modern engines use various checks and balances to adjust the fuel-to-air ratio inside the combustion chambers. If the engine manages this ratio poorly, many problems can arise---including permanent... Read More »

How to Adjust the Lean-to-Rich Mixture on a Holley Carburetor?

Holley carburetors are a popular aftermarket upgrade for cars and trucks. The carburetor combines the car's fuel with air in the correct proportion for combustion. The lean-to-rich parameter adjust... Read More »

How to Adjust the Oxygen & Gas Mixture on a Carburetor?

The air and fuel ratio on a vehicle with a carburetor can be manually adjusted for the optimum fuel ratio. On fuel-injected vehicles, this is done automatically. Adjusting the oxygen and gas mixtur... Read More »

How do I Replace an O2 Sensor With Os-4000 Universal Oxygen Sensor on a 2002 Outback?

Most vehicles, including the 2002 Subaru Outback, have the same size oxygen sensor, which is 7/8-inch. The biggest difference in oxygen sensors is that some have a preheater and some don't. The 200... Read More »