1. 1978 cj5 AMC 304 no oil pressure

    We have a 1978 cj5 with an AMC 304. My husband and I have rebuilt our jeep. The problem is we will have oil pressure and then the next time we drive there will be no pressure. We have replaced oil pump and sender, have checked the wiring, new gauge, did clearance. Please help, I want to drive my jeep.

  2. #2
    Join Date
    Dec 1999
    Location
    Virginia Beach VA
    Posts
    8,097

    Re: 1978 cj5 AMC 304 no oil pressure

    I don't have any ideas for you on this one. Were you able to figure it out?
    My 2005 Wrangler Build Thread

    He who is without oil shall throw the first rod. -Compressions 8.7:1

  3. #3
    Join Date
    Nov 2014
    Location
    Edmonton,Alberta, Canada
    Posts
    104

    Re: 1978 cj5 AMC 304 no oil pressure

    My initial thought is an intermittent contact. Because of the age, thinking maybe worn out contacts? Bad connection somewhere in the line or in the connector, wiring or splice? My '91 DSM has a stupid slide contact that I put a tywrap on to keep a good contact.
    Do you know if you actually have no oil pressure? Other semi-random thoughts..you didn't mention you were burning oil and I'm not second guessing your build but how's compression, any blow by or valve seal condition? Condition of the crank? Just some thoughts if you were actually not having good pressure

  4. #4
    Join Date
    Nov 2014
    Location
    Edmonton,Alberta, Canada
    Posts
    104

    Re: 1978 cj5 AMC 304 no oil pressure

    Never noticed duplicate thread

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