1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

# 4 Plug wet with oil...just started smoking :(

Discussion in 'Early CJ5 and CJ6 Tech' started by willys59cj5, Jan 5, 2006.

  1. Jan 5, 2006
    willys59cj5

    willys59cj5 Sponsor

    Gilroy, CA
    Joined:
    Jun 1, 2005
    Messages:
    660
    The engine did smoke once a while ago when I took it for a short drive...I thought it was a freak occurance because it stopped doing it. Then today I went for a longer ride and the engine started smoking heavily at idle. Pulled the #4 plug and it was heavily oiled. Checked the compression 120 PSI. All other plugs were good. What do you guys think? I've had the jeep for 15yrs and never had this problem before.:(
    PS its a 225 v6
     
  2. Jan 6, 2006
    grannyscj

    grannyscj Headed to the Yukon

    Anchorage, AK
    Joined:
    Dec 19, 2005
    Messages:
    1,758
    If the compression leaks off you could have a broken ring. If it doesn't I would check the valve guides. You could be pulling oil in that way on the downstroke. One other thought is if you have a line drawing intake vacuum that is in any way connected to an oil system (and normally separated by a diaphragm) you should check that as well. I had that problem with a chevy p/u- the vacuum modulator diaphragm on the tranny had a leak. Truck smoked like a mosquito wagon. Good luck.:v6:
     
  3. Dec 2, 2006
    blownfuse

    blownfuse New Member

    lincolnton, nc
    Joined:
    Dec 2, 2006
    Messages:
    14
    Mine started smoking, tore it down and found three pistons with broken rings,top ring. The oil rings had a lot of wear,there was a lot of blow by.
     
  4. Dec 3, 2006
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
    Joined:
    Aug 3, 2003
    Messages:
    9,754
    The above answers are good ones.

    But just to sure, is the #4 getting a good spark?

    Pete
     
New Posts