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New to me YJ with 118k...anything to be aware of?

Discussion in 'Wrangler YJ (1986-1995)' started by JAM78155, Jul 21, 2020.

  1. Jul 21, 2020 at 9:14 AM
    #1
    JAM78155

    #1
    JAM78155 [OP] New Member

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    Just bought a 90 YJ in good shape with many upgrades. The engine has 118000. Seller mentioned these engines are noisy and that is common. Some clacking. Jeep runs great. Is this common and if so, anything to worry about?
     
    JAM78155, Jul 21, 2020
    #1
  2. Jul 21, 2020 at 3:32 PM
    #2
    Jim Beam

    #2
    Jim Beam Well-Known Member

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    Vehicle:
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    Fuel Injection, Dana 44s, T18, 4.10s w/lockers
    118k is not that bad for an engine with a good history. If you have this "Clacking" it could be a stuck hydraulic lifter. There are numerous additives that you can use in your oil that can clean it out. I like Rislone as it has solved previous issues. I would also recommend Shell Rotella oil in the 15w-40 as it has great detergent qualities. Some say it is for diesel engines only, it is not. I have been using it for years and it keeps my engines quite clean. The slightly heavier oil works great for the older 258 and will increase the oil pressure. this can be noted best with a mechanical oil gauge.
     
    Jim Beam, Jul 21, 2020
    #2
    Bob, LYFZGOOD and aggrex like this.
  3. Oct 19, 2020 at 5:55 AM
    #3
    Jamesl57

    #3
    Jamesl57 New Member

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    I have 2 1990s worst thing they have plastic timing gears if its got a noise. Been there twice, you have to pull the pan and the tiiming cover .Do yourself a favor when the pan is off put in new rod and main bearinngs they are cheap and without saying. New main seal and oil pump ,the bearings and seal are 2 peice and you use the new one to push the old one around
     
    Jamesl57, Oct 19, 2020
    #3
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