Engine Performance problem
1995 Jaguar XJ6 6 cyl Two Wheel Drive Automatic 97000 miles
MY JAG XJ6 IS RUNNING ROUGH, LACKING POWER, EMMISSIONS SKY HIGH, AND CATALYTIC CONVERTOR GLOWING RED HOT, I HAVE HAD INJECTORS REPLACED, LAMDA SENSOR SWITCH REPLACED, 2COIL PACKS, PLUGS, AIR FILTER, PLEASE HELP?
1. Excessive fuel pressure can be cause by restricted fuel return line or defective fuel pressure regulator.
2. Defective Oxygen Sensors.
3. Leaking injectors and fuel pressure regulator.
4. Coolant temperature sensor out of calibration.