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7.3 desiel no power ?

Discussion in 'Ford Trucks' started by vmj, Nov 9, 2015.

  1. vmj

    vmj Senior Member
    from conn
    Messages: 752

    have a 02 7.3 when its cold in morning it has no power to make it up a slight hill. and that's after letting it run a bit..... Then it'll run normal...
    Thanks,
     
  2. Mark Oomkes

    Mark Oomkes PlowSite Fanatic
    Messages: 10,919

    Injector(s)
     
  3. skorum03

    skorum03 2000 Club Member
    Messages: 2,942

    Probably this.


    There isn't a whole lot that can go wrong with these. Any check engine lights?
     
  4. vmj

    vmj Senior Member
    from conn
    Messages: 752

    no lights only on cold mornings
     
  5. skorum03

    skorum03 2000 Club Member
    Messages: 2,942

    maybe your exhaust back pressure valve is sticking until the truck gets warm?
     
  6. tjctransport

    tjctransport PlowSite.com Addict
    Messages: 1,390

    this would be my guess as well. how many miles on the truck?
     
  7. JustJeff

    JustJeff 2000 Club Member
    Messages: 2,062

    I wouldn't expect too much from it, it's a 7.3 after all. Just busting your chops!
     
  8. Randall Ave

    Randall Ave 2000 Club Member
    Messages: 2,048

    Put a scanner on it, run codes and tests. Does she smoke when cold? Will it reve up when cold, or a bad stumble.
     
  9. SnoFarmer

    SnoFarmer PlowSite Fanatic
    from N,E. MN
    Messages: 8,612

    When was the last time you changed the fuel filter?
     
  10. PremierSnowPlow

    PremierSnowPlow Senior Member
    Messages: 125

    Check oil, your injectors could be starving of oil when it's cold until it warms up. Had this happen on my 00'
     
  11. vmj

    vmj Senior Member
    from conn
    Messages: 752

    it did the same thing on and off last winter.. it has 185000 miles on it no smoke.. no codes. just did oil and filters.. and it will rev up
     
  12. vmj

    vmj Senior Member
    from conn
    Messages: 752

    how do I check this ? where is it located ? Thanks
     
  13. skorum03

    skorum03 2000 Club Member
    Messages: 2,942

    It is connected to the turbo pedestal, right underneath the turbo. It just opens and closes in the winter to keep your truck warm. You know it is closed when your exhaust is crazy loud when you first start your truck up. I did the EBPV delete on my 7.3

    I would just get a new turbo pedestal without the EBPV. I think mine was like $150. Can be tough to replace if your turbo bolts are rusty, mine were and the back one sheared taking it out. You can check to see if the rod coming out of the turbo pedestal is leaking any oil, that is usually a sign that it isn't going to be operating correctly.
     
  14. vmj

    vmj Senior Member
    from conn
    Messages: 752

    I will look at this today..... thanks
     
  15. tjctransport

    tjctransport PlowSite.com Addict
    Messages: 1,390

    when the exhaust back pressure valve sticks, it sounds like a jet out of the exhaust, and the truck has no power
     
  16. skorum03

    skorum03 2000 Club Member
    Messages: 2,942

    but if you tap the break with your foot, the valve should open and the loud noise should stop
     
  17. Mark Oomkes

    Mark Oomkes PlowSite Fanatic
    Messages: 10,919

    $100 says injector(s).
     
  18. Randall Ave

    Randall Ave 2000 Club Member
    Messages: 2,048

    Just throw a set of injectors in it, ain't that hard to do. xysport

    Before I do that I would take it to someone who has a good scanner, and run all the tests on it.
     
  19. snowish10

    snowish10 PlowSite.com Addict
    Messages: 1,082

    I hardly doubt the injectors are bad with only 185,000 on them. They usually last till 300k
     
  20. skorum03

    skorum03 2000 Club Member
    Messages: 2,942

    But they are expensive.

    But yea I would scan it too