Solutions to Fix High Fuel Consumption in Older Jetta Models?
1 Answers
Solutions to fix high fuel consumption in older Jetta models are as follows: 1. Regularly replace the three filters: replace the oil filter when changing engine oil, inspect the air filter during each maintenance, and replace the fuel filter every 15,000 km. 2. Spark plugs: The spark plug high-voltage wires in Jetta models are not very durable but are inexpensive. It's best to replace spark plugs every 20,000 km, and the high-voltage wires must be replaced every 30,000-50,000 km. 3. Check the coolant level: Ensure it's sufficient, as excessively high water temperature can affect performance and increase fuel consumption. 4. Inspect the front wheel half-shafts: Check if the rear wheel bearings are maintained on schedule (every 20,000 km). 5. Check tire pressure: Generally, 2.4 kg is suitable. Below is related information about fuel consumption: 1. Tires: Fuel consumption is significantly related to tires. Generally, the larger the contact area between the tire and the ground, the stronger the grip, but the frictional resistance may also increase. 2. Oxygen sensor: The primary function of the oxygen sensor is to monitor the oxygen concentration in the exhaust. The vehicle's computer adjusts the fuel injection quantity in real-time based on the data it provides. It is usually installed near the three-way catalytic converter and is divided into the front oxygen sensor and the rear oxygen sensor.
