1984 Chrysler 5th Avenue Engine Running to Rich and will no

1984 CHRYSLER FIFTH AVENUE
120,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
BILLMERZ
  • MEMBER
  • 1 POST
I took the EGR valve Off The Intake and started the engine and seemed to run ther same without it even there The Intake Must Be clogged With carbon. Is There any way Of cleaning the carbon out without totally taking off the intake Manafold.
Would this cause the motor to run real rich?
I Replaced The Oxygen Sensor, did not change anything. I still smell rich gas fumes especially at idle

Thank You Bill
Sep 14, 2010 at 8:26 AM
Advertisement
Avatar
RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Probable causes of an engine running rich are as follows:

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.
5.Restricted air intake system.
Sep 14, 2010 at 2:00 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.