fe tapping need advice

Discussion in 'Other Automotive Tech & Talk' started by JHodges, Aug 4, 2009.

  1. JHodges

    JHodges thumper

    Joined:
    Oct 14, 2006
    Messages:
    1,902
    Likes Received:
    5
    Trophy Points:
    132
    Location:
    Dora Alabama
    Vehicle:
    1972 Maverick 351w swap, 1965 Mustang 355 glide, 1993 civic daily driver
    I finally got the electric fuel pump hooked up on my truck. I went to drive it and heard a tap at about 2500 rpm. It hols good oil pressure and does not tap until about 2500 rpm. My dad told me it might be a loose rocker arm. I checked and all were torqued to 45lb. I am thinking possibly a bad lifter. It does not sound like a rod knock. Anybody else have any ideas
     
    JHodges, Aug 4, 2009
    #1
  2. sierra grabber

    sierra grabber Certifiable

    Joined:
    Sep 29, 2005
    Messages:
    2,808
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    northern nevada
    Vehicle:
    71 grabber red and black; 74 2dr LDO comet
    the lifter could have weak springs, try adding some marvel mystery oil to the oil and see if that helps. also is the oil clean and thick enough? (synth is usally thinner even when it lists as the same weight) also it could be an exhaust leak at the manifold gasket (mine was ticking at higher rpm due to there being more pressure)
     
    sierra grabber, Aug 4, 2009
    #2
  3. JHodges

    JHodges thumper

    Joined:
    Oct 14, 2006
    Messages:
    1,902
    Likes Received:
    5
    Trophy Points:
    132
    Location:
    Dora Alabama
    Vehicle:
    1972 Maverick 351w swap, 1965 Mustang 355 glide, 1993 civic daily driver
    I am running standard 20w50 in it. I don't believe there is any exhaust leaks. I recently put a set of headers gaskets on it
     
    JHodges, Aug 4, 2009
    #3
  4. tim keck

    tim keck truckdrivintrailertrash

    Joined:
    Jul 4, 2004
    Messages:
    1,991
    Likes Received:
    7
    Trophy Points:
    111
    Location:
    sharps chapel,Tn
    Vehicle:
    '72 Comet, '75 Maverick, '85 F150 4x4 ,'93 F150,'75 F100,'77 Jeep Wagoneer,'91 Dodge D250 Cummins,'90 F150 xtra cab 4x4, '93 F150 4x4
    Pour a little tranny fluid through the carb,sometimes it'll quiet ticky lifters.Smoke show is a free by-product.
     
    tim keck, Aug 7, 2009
    #4
  5. don graham

    don graham MCG State Rep

    Joined:
    Mar 10, 2002
    Messages:
    15,800
    Likes Received:
    16
    Trophy Points:
    302
    Location:
    arizona city, az.
    Vehicle:
    70 mav, 71 grabber, 73 Comet, 2004 f-250 crew cab diesel, 2001 f-250, 2004 explorer, 2007 Gold Wing trike.
    I'd check the header gaskets again. Mine seem to loosen up a bit after a while. :)
     
    don graham, Aug 7, 2009
    #5
  6. sierra grabber

    sierra grabber Certifiable

    Joined:
    Sep 29, 2005
    Messages:
    2,808
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    northern nevada
    Vehicle:
    71 grabber red and black; 74 2dr LDO comet
    did you try using a screw driver like a stethiscope and localize it?
     
    sierra grabber, Aug 7, 2009
    #6

Share This Page