2004 Expedition Timing Chain Tensioner Questions

Discussion in '2nd Gen - 2003 - 2006' started by MattP1976, Nov 8, 2019 at 8:47 AM.

  1. MattP1976

    MattP1976 Member

    Age:
    43
    Posts:
    13
    Likes Received:
    1
    Joined:
    Feb 22, 2019
    Location:
    New Caney Tx
    I have an 04 Expedition with a 4.6 swapped from an 04 Police Interceptor. I replaced the chains, guides, and tensioners when we did the swap. I used aftermarket tensioners. I did NOT replace the oil pump. The problem now is that after the vehicle warms up, I'm hearing what sounds like time chain rattle from the front cover area. Seems to be the passenger side. I took the belt off to eliminate pulley noise to verify. Is it possible my oil pump is not pressuring up the tensioners enough? Is it possible that plastic material from the original guides made it past the oil pump pickup screen and may be blocking the passage? What tensioners and oil pump do you recommend?

    I'm about the pull the pan and front cover to retrace my steps on the timing job.

    Thanks!
     
  2. John Stephan

    John Stephan Full Access Members

    Posts:
    58
    Likes Received:
    10
    Joined:
    Jan 31, 2019
    Location:
    Middle America
    If you had broken guides and never dropped the pan, its guaranteed to be partially blocked.

    Sent from my SM-G950U using Tapatalk
     
    1955moose likes this.
  3. MattP1976

    MattP1976 Member

    Age:
    43
    Posts:
    13
    Likes Received:
    1
    Joined:
    Feb 22, 2019
    Location:
    New Caney Tx
    I pulled the pan and cleaned out the pieces. I also took extra care to clean out the screen on the pickup tube.
     
    John Stephan likes this.
  4. 1955moose

    1955moose Full Access Members

    Posts:
    5,949
    Likes Received:
    1,282
    Joined:
    Nov 23, 2014
    Best bet to check oil pump, is screw in a pressure gauge with any adapter's you need straight to oil pressure switch port. Just because you cleaned pickup screen doesn't mean pump isn't tired or failing. A lot of the early 3 valve motors had oil pump problems. A Melling replacement is usually what most here recommend. But check your pressure first to see if it's within spec's.

    Sent from my N9131 using Tapatalk
     

Share This Page