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02 SD F250 5.4 rough idle when oil fill cap removed.

Discussion in 'Ford Trucks' started by dieselboy01, Dec 15, 2015.

  1. dieselboy01

    dieselboy01 Senior Member
    Messages: 784

    I just did an oil change on my 02 F250 with the 5.4, I started the truck to check the oil level without the oil cap on and it ran like I ripped 7 spark plugs out. I took my hand and covered where the cap goes and the truck ran fine. Removed my hand and she went back to a rough idle. Is this normal? I'm guessing it's vacuum related but it just seemed strange.
     
  2. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,929

    Thought someone just posted this....replace your pcv valve
     
  3. dieselboy01

    dieselboy01 Senior Member
    Messages: 784

    I just found the other post, thanks!
     
  4. dieselboy01

    dieselboy01 Senior Member
    Messages: 784

    It was the PCV, thanks for the help!
     
  5. grandview

    grandview PlowSite Fanatic
    Messages: 14,609

    Couldn't you of just texted your brother and ask?
     
  6. dieselboy01

    dieselboy01 Senior Member
    Messages: 784

    Ha! Who's my brother grandview?
     
  7. maxwellp

    maxwellp PlowSite.com Addict
    Messages: 1,112

    Dieselboy01
    Dieselss