SPONSORED LINKS

2003 Ford F-150 lean fuel bank 2

Tiny
KOZY56
  • MEMBER
  • 2003 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 100,000 MILES
Engine started rough Idling, but okay when going down road. Service engine soon came on, read code, bank 2 fuel lean. I changed fuel filter, air filter and put some injector cleaner in fuel line when filling up at gas station. Didn't change anything. When remove air filter cover, it seems to smooth out. When idling RPMS go up and down and needle flutters also. Do you have any ideas?
SPONSORED LINKS
Sunday, June 20th, 2010 AT 11:13 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Lean fuel condition could be caused by 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.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, June 20th, 2010 AT 11:30 PM

Please login or register to post a reply.

Related Engine Lean Content

How To Fix an Engine Backfire
VIDEO
How To Fix an Engine Backfire
Instructional repair video
Lean Exhaust
GUIDE
Lean Exhaust
Common Misconception: When an engine misfires, the cylinder runs lean, not rich, this is because the air to fuel ratio favors air by 14x. Therefore, an engine must be...
VIEW MORE

Sponsored links