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

Tiny
BILLMERZ
  • MEMBER
  • 1984 CHRYSLER FIFTH AVENUE
  • V8
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
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
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Tuesday, September 14th, 2010 AT 8:26 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 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.
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Tuesday, September 14th, 2010 AT 2:00 PM

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