High fuel consupmtion
Hello there. Many common faults will cause your 1990 Toyota Corolla to consume excessive fuel. The most common causes are leaking fuel injector (https://www.yourmechanic.com/services/fuel-injector-replacement), vacuum leak, a faulty MAF sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement), fuel leak, spark plugs (https://www.yourmechanic.com/services/spark-plugs-replacement), plug wires (https://www.yourmechanic.com/services/ignition-cable-spark-plug-wires-replacement), or...