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Multiple misfires and lean bank 2

Tiny
KYLE ELLINGTON
  • MEMBER
  • 2005 FORD F-150
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 107,000 MILES
Started with a misfire cylinder eight. Changed all spark plugs and coil eight. Ran good two days then misfire cylinder seven changed coil seven. Did not run somewhat better but still misfired but no CEL. Ran two weeks this way. Then yesterday after two weeks CEL back on. Now it P0174 Lean bank 2 and also random misfire code and misfire cylinder six after one minute of light on it begins flashing. I have had the truck twelve years never seen it flash so I quit driving it it was was running bad. Any thoughts?
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Thursday, August 17th, 2017 AT 6:02 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hello,

The lean codes are form the misfires. I sounds like you have some bad injectors on those cylinders, could have gotten bad gas.

Here are some guides that will help you run a test and then replace the injectors:

https://www.2carpros.com/articles/how-to-replace-a-fuel-injector

and

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Please let us know what happens.

Cheers, Ken

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Friday, August 18th, 2017 AT 1:30 PM

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