1991 Mazda B2200 mazda91

Tiny
SQUAD200
  • MEMBER
  • 1991 MAZDA B2200
  • 4 CYL
  • 2WD
  • MANUAL
  • 14,000 MILES
My mazda 91 with 140,000 miles smokes up really bad and the smell is horriable it waste alot of gas and the engine shakes its not stable any help thanks.
Sunday, August 1st, 2010 AT 10:23 PM

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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Sunday, August 1st, 2010 AT 10:33 PM

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