Mechanics

TROUBLE CODES ENGINE BANK 1 & 2 LEAN AND ALSO SOMETIMES CYLINDER MISFIRE

2001 BMW 325i • 108,000 miles

I have changed out the fuel filter and checked for vacuum leaks not sure what to do next.
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Roaddog256
January 3, 2012.




Could be one of the following below: 1. Vacuum leaks

2. EGR and PCV valve.

3. Low fuel pressure.

4. Dirty fuel injectors.

5. Mass Air Flow Sensor.

6. Oxygen Sensor.

Tiny
Rasmataz
Jan 3, 2012.
I also forgot to tell you I removed all of the spark plgs one at a time and 4 of them looked good but the last two had black spots instead of that gray color, /what does that mean

Tiny
Roaddog256
Jan 3, 2012.
Carnoned-up-means the fuel condition is too rich-
AD

Tiny
Rasmataz
Jan 3, 2012.
Inspect the intake boot for tears or holes and consider that the factory recommends replacement of the oxygen sensors (pre-cat) at 100k

Dr. Hagerty
Jan 11, 2012.
May also need software upgrading.

Dr. Hagerty
Jan 13, 2012.
How do I get a software upgrade? I found the problem it was a tear is the oil dipstick vacuum hose.

Tiny
Roaddog256
Jan 13, 2012.
Clear the faults and thats it.

Dr. Hagerty
Jan 18, 2012.

AD