Possible Fault Causes
Rich mixture (approximately 20% Deviation): Possible causes: - Fuel pressure too high (regulator, return line plugged) - Defective mass airflow meter - Defect in PCV - Oxygen sensors before cat. defective
Rich mixture (approximately 20% Deviation): Possible causes: - Fuel pressure too high (regulator, return line plugged) - Defective mass airflow meter - Defect in PCV - Oxygen sensors before cat. defective