RUNS RICH

2004 Mazda RX8

Tiny

Rob Quaglia

March, 22, 2010 AT 1:55 PM

Engine Performance problem
2004 Mazda RX8 Two Wheel Drive Manual

I have a 2004 RX8 rotary 1.4L It runs very rich almost enough to make your eyes water. The only code is low efficency on cat. I have had it checked out and was told the cat is not bad. Any ideas? I have been running super in it for 3 months it also gets poor gas milage even driving it gently. Please any help would be welcomed. Thank you.

FOUND 380 RELATED QUESTIONS

Runs Rich

20 ANSWERS

720 Running Rich

22 ANSWERS
1 IMAGE

1 Answer

Tiny

rasmataz

March, 22, 2010 AT 4:34 PM

Probable causes of an engine running rich are as follows: 1. Fuel pressure not within specs. Can be cause by restricted fuel return line or defective fuel pressure regulator.
2. Defective Oxygen Sensors.
3. Leaking injectors.
4. Coolant temperature sensor out of calibration.
5. Restricted air intake system.

Please login or register to post a reply.

Read Codes Like a Pro
Code Read Retrieval/Clear Chevrolet Camaro
Code Read Retrieval/Clear Scion XD
How to gather codes Ford Explorer