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Firing Up An Unknown Engine

Discussion in 'Early CJ-5 and CJ-6 Tech' started by Strider380, Dec 31, 2018.

  1. Dec 31, 2018
    Strider380

    Strider380 Can I have a zip tie?

    New England
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    Need some advice from the pro’s here. I bought a used dauntless thats suppose to be in great shape. I installed it and with the distributor removed, i tried priming the oil pump. The oil dipstick checks out fine but after a whole night i still was getting nothing on the pressure gauge and no oil flow in valve covers. Infact i pulled the oil filter off and it was dry as a bone. So i pulled the oil pump cover off and packed it with vaseline. Now i get around 60-70 psi oil pressure. Which is a little scary to me. The oil filter is full. I still havnt seen any oil flowing around in the valve covers. Should i just go ahead and fire this thing or am i set up for disaster? Thanks in advance!
     
  2. Dec 31, 2018
    PeteL

    PeteL Member Sponsor 2019 Sponsor

    Hills of NH
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    I would check that the oil pressure-relief valve is clean and free.

    I once mounted a NOS oil pump, and blew the oil filter right off the engine because the relief was gummed closed with old cosmoline.

    As for the rockers, have you tried cranking the engine for a while with the coil disconnected?
     
    Last edited: Jan 1, 2019
    Rick Whitson and Rich M. like this.
  3. Dec 31, 2018
    3b a runnin

    3b a runnin Sponsor Sponsor

    virginia
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    I'm for sure not a pro, but if it was mine, I would turn it manually with a ratchet. Just to see if it would put any oil up top. Might need to move the lifters a little.
    Good luck
     
  4. Jan 1, 2019
    Rick Whitson

    Rick Whitson Detroit Area Sponsor 2019 Sponsor

    I live South of...
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    I put a kill switch on my Jeep, and after a long storage I crank it with the kill switch off until the oil light goes out. It Takes a while to get oil to the top end, I crank and stop and crank and stop until the light goes out, then it's ready to fire up. Good Luck
     
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  5. Jan 1, 2019
    jpflat2a

    jpflat2a what's that noise?

    Riverside CA
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    You won't see much at the rockers.
    V6 doesn't deliver much.
     
  6. Jan 1, 2019
    Strider380

    Strider380 Can I have a zip tie?

    New England
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    It seems like 70 psi isnt the end of the world at start up. This engine sounds increadible, im wondering if it is getting oil and im just not seeing it. Ive been turning the oil pump and engine for several nights now...
     
  7. Jan 1, 2019
    NCRenII

    NCRenII yellow fever Sponsor

    Far Nor Cal
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    see post 16 below for better description.
    also pg 10 of the manual link posted has the flow diagram
     
    Last edited: Jan 2, 2019
  8. Jan 1, 2019
    OzFin

    OzFin Vintage Jeep Guy

    Michigan
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    Its my understanding the oil for the rockers come up through the rocker shaft pedistal's and then down the shafts, its possible a previous owner may have removed and replaced incorrectly. Take a look at the rocker assemblies to see that they are aligned correctly. Follow this link and look at section D1, D1-60 on page 93 for details. Jeepster Service Manual
    Oz
     
    Last edited: Jan 1, 2019
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  9. Jan 1, 2019
    timgr

    timgr Jeepin' Nerd Sponsor 2019 Sponsor

    Medford Mass USA
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    On a 225, does not the oil pump run off of the bottom of the distributor? I think it does. Supposedly it's the same oil priming setup as a Chevy V8. You remove the distributor and put the tool in the distributor hole, then spin it with your electric drill. Walla, oil pressure. Posts about this say you will see oil coming out at the rockers, once everything is primed. You should also see an indication of oil pressure on a mechanical OP gauge.
     
  10. Jan 1, 2019
    PeteL

    PeteL Member Sponsor 2019 Sponsor

    Hills of NH
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    That was not "start up" with the engine running, and it should not be that high. Time to ask yourself why.

    For instance, what if a main oil gallery is blocked?
     
  11. Jan 1, 2019
    Strider380

    Strider380 Can I have a zip tie?

    New England
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    Ive been spinning the oil pump with an old distributor shaft for several nights now. After packing it with vaseline, i finally got good oil pressure and flow thru the filter. Still nothing up top tho. Wondering if im missing something or this is normal
     
  12. Jan 1, 2019
    Rich M.

    Rich M. Shoe pusher

    Maryland
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    That's not normal. You should see oil at the heads. Any number of things could be wrong.
    Pictures please....
     
  13. Jan 1, 2019
    47v6

    47v6 junk wrecker! Sponsor

    Washington DC.
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    (y)
     
  14. Jan 1, 2019
    mike starck

    mike starck Member Sponsor 2019 Sponsor

    salem,oregon
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    When in doubt go look. pull one rocker arm assembly off and inspect.try to prime pump again w/rocker off . good luck
     
  15. Jan 1, 2019
    Walt Couch

    Walt Couch sidehill Cordele, Ga. Sponsor 2019 Sponsor

    cordele, Ga.
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    On the 225 only the front rocker tower has the oil journal for the rocker shaft and it also has to have the special shank bolt to allow the oil to pass by. Also the rocker shaft has to be correctly installed. Only one way is the right way. The rear of the left bank has the shaft alignment notch pointing out away from the engine and the right rocker assy shaft will have the alignment notch at the front and pointing out away from the engine.
     
  16. Jan 2, 2019
    OzFin

    OzFin Vintage Jeep Guy

    Michigan
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    Here are some pictures that may help.
    Oz

    [​IMG]

    [​IMG]

    [​IMG]
     
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  17. Jan 2, 2019
    Walt Couch

    Walt Couch sidehill Cordele, Ga. Sponsor 2019 Sponsor

    cordele, Ga.
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    Glad to see this as it clears up a lot of miss-conceptions.
     
  18. Feb 4, 2019
    Strider380

    Strider380 Can I have a zip tie?

    New England
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    The valve that is directly next to where the oil filter screws on...is it suppose to be open or closed? I found it sideways jammed open. Of course i had to poke at it with a screw driver and it looks much more natural closed. Literally cannot find any documentation in my manuals or internet. Hopefully this could have been causing my 70psi or “no flow to heads” issues
     
  19. Feb 4, 2019
    tarry99

    tarry99 Member Sponsor

    Northern California
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    So much misunderstanding about the little V6.............If it's going to live it needs oil upstairs......and if it's right , here is what it looks like:
    [​IMG]
    [​IMG]
     
  20. Feb 4, 2019
    53A1

    53A1 Member

    Kern Co. Ca.
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    Going through the same thing right now and I wondered the same thing. Very little oil in the head so I pulled my rockers and turned the oil pump with drill attachment. The front galleys that exit into the front rocker mount were gummed up and when I took the rocker off and used the drill it decided to let loose; blew it's wad so to speak. You can stick a long piece of Aluminum welding rod down in the galley pretty far if it's really gummed up.

    Having gone through this already, I would clean your lifters and work the valves loose while your at it or you may end up with some bent push rods. If you decide to go that route, I would leave the lifters empty after you take apart and clean. When you install the rockers then pump them up with the drill attachment.

    Also wouldn't hurt to add some engine flush to your oil while you're pressurizing the system. I used some Lucas and MMO and my oil turned black after the galleys started clearing out. You can also pull the front two lifters out and do the same thing to clean those galleys out. Sounds like your engine is full of old oil and varnish so I would do all the above and maybe drop the pan also. If it's just from sitting many years and not actually worn out you can save it.
     
    Last edited: Feb 4, 2019

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