Buick LaCrosse 2010-2016 2.4L Engine Specifications

The 2.4L Ecotec inline-4 engine in the 2010-2016 Buick LaCrosse produces 182 horsepower at 6,700 rpm and 172 lb-ft of torque at 4,900 rpm. It features direct fuel injection, variable valve timing, and a cast aluminum block with a forged steel crankshaft. The engine is compatible with regular unleaded fuel (87 octane) and has a fuel capacity of approximately 18 gallons. It is paired with a 6-speed automatic transmission and is available in both front-wheel drive and all-wheel drive configurations.

Regular maintenance for the 2.4L engine includes oil changes every 5,000 to 7,500 miles using 5W-20 synthetic oil. Tire rotations should be performed every 7,500 miles, and the engine air filter should be replaced every 15,000 to 30,000 miles. Spark plugs should be replaced at 100,000 miles, and the serpentine belt should be inspected every 50,000 miles and replaced as needed. It is also recommended to follow the maintenance schedule outlined in the owner's manual for optimal performance and longevity.

To replace the air filter, open the hood and locate the air filter housing on the driver's side. Release the two clips on the housing by sliding them outward, then pull the housing away from the engine. Remove the old air filter and discard it. Insert the new air filter, ensuring it is properly seated and aligned. Reattach the housing and secure it with the clips. Close the hood and start the engine to ensure proper operation.

Common issues with the 2.4L engine include reduced engine performance, excessive oil consumption, and ignition coil failures. To troubleshoot, start by checking the dashboard for any warning lights and using an OBD-II scanner to retrieve any error codes. Inspect the spark plugs and ignition coils for wear or damage. Check the oil level and condition, and look for signs of leaks. If issues persist, consult a certified mechanic or refer to the service manual for further diagnostic steps.

To optimize performance, ensure regular maintenance is performed, including oil changes, air filter replacements, and spark plug maintenance. Use high-quality fuel and avoid aggressive driving habits. Consider upgrading to a performance air intake or exhaust system for improved airflow. Additionally, ensure proper wheel alignment and tire pressure to maximize fuel efficiency and handling. For advanced tuning, consult a professional to explore engine calibration options.