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#1 Cylinder At Tdc, Distributor Pointing To 3 O'clock

Discussion in 'Early CJ5 and CJ6 Tech' started by CJ51962, Aug 22, 2017.

  1. Aug 22, 2017
    CJ51962

    CJ51962 Member

    Seattle
    Joined:
    Jan 10, 2013
    Messages:
    244
    I verified #1 TDC on compression stroke by the fact that the loose spark plug blew out on the way to the timing mark (hand turning engine clockwise while facing from front of Jeep). The dizzy points to about 2 or 3 o'clock. I know I can just orient #1 plug to that mark, however while it's in that position I do not have enough retard on the timing plate to get her to start. Engine bucks and won't start.

    Question: am I missing something, or was the oil pump installed slightly off? Easier fix out there besides taking the pump off?
     
    CJ51962, Aug 22, 2017
    #1
  2. Aug 22, 2017
    rejeep

    rejeep Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Rochester, NY
    Joined:
    Nov 5, 2009
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    What engine
     
    rejeep, Aug 22, 2017
    #2
  3. Aug 22, 2017
    CJ51962

    CJ51962 Member

    Seattle
    Joined:
    Jan 10, 2013
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    Sorry, F134. Rebuilt IAY 4401 from Willys Distributors (with a Pertronix).
     
    CJ51962, Aug 22, 2017
    #3
  4. Aug 22, 2017
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
    Joined:
    Nov 22, 2003
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    8,126
    Drop the pump & rotate the shaft until it's in the right spot, it will take 2 0r 3 tries. Make sure you have a fresh gasket. Not that hard to do but easier from underneath.

    H.
     
    Howard Eisenhauer, Aug 22, 2017
    #4
  5. Aug 22, 2017
    CJ51962

    CJ51962 Member

    Seattle
    Joined:
    Jan 10, 2013
    Messages:
    244
    Will I need to re-prime the pump? Or is it as easy unbolting just enough to drop and rotate?

    Thanks
     
    CJ51962, Aug 22, 2017
    #5
  6. Aug 22, 2017
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
    Messages:
    12,381
    If you have help you can do as you ask about, slide it out far enough to be able to turn it with a long screwdriver while someone holds the pump so it won't fall out. Unless of course you want to change the gasket as Howard suggests. Do you understand clearly about the offset?
     
    Glenn, Aug 22, 2017
    #6
  7. Aug 22, 2017
    CJ51962

    CJ51962 Member

    Seattle
    Joined:
    Jan 10, 2013
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    244
    Clear as mud. Offset?
     
    CJ51962, Aug 22, 2017
    #7
  8. Aug 22, 2017
    rumble66

    rumble66 New Member

    Ontario Canada
    Joined:
    Jul 21, 2017
    Messages:
    16
    The slot in the pump, tang on the dizzie are a bit off middle.

    FWIW, my dizzie has cylinder 1 at about 1 o'clock.
     
    rumble66, Aug 22, 2017
    #8
  9. Aug 22, 2017
    3b a runnin

    3b a runnin Active Member 2023 Sponsor 2022 Sponsor

    virginia
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    Jan 11, 2015
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    Mine is about 5 o'clock position, guess it don't really matter
     
    3b a runnin, Aug 22, 2017
    #9
  10. Aug 23, 2017
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
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    12,381
    From the service manual pertaining to the oil pump: If the installation was properly made, the slot will be in a position roughly equivalent to eleven o'clock position with the wider side of the shaft on top.
     
    Glenn, Aug 23, 2017
    #10
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