1991 GMC Acadia Repair Question
Topics covered: Fuel pressure, Sensor, Coolant.
Mileage: 160,000 miles.
Mileage: 160,000 miles.
Asked on December 12, 2010
Can't find the problem
I put several new parts on my 91 gmc sierra and still can't keep it from flooding
Asked by rickey crawleyAnswer
Replied on December 12, 2010
Probable causes of an engine running rich are as follows:
1.Excessive fuel pressure can be cause by restricted fuel return line
2.Defective Oxygen Sensors.
3.Leaking injectors and fuel pressure regulator.
4.Coolant temperature sensor out of calibration.
5.Restricted air intake system.
