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225 valve train noise

Discussion in 'Early CJ5 and CJ6 Tech' started by michigan_pinstripes, Oct 31, 2004.

  1. Oct 31, 2004
    michigan_pinstripes

    michigan_pinstripes I'm not lost, I'm wandering

    Clarkston MI...
    Joined:
    Aug 20, 2003
    Messages:
    605
    Jerry and I got the 225 running this afternoon! hooked up a battery, poured a little gas in the carb and stuck the fuel line in a gas can (gas tank not hooked up).

    VAROOM! It fired without hesitation --or blue smoke! 40PSI oil WOO HOO! Very smooth and no engine shake

    We let it run for a while up to temperature and soon we heard what sounded like faint valve train clatter. It wasn't the typical lifter ticking either. We couldn't isolate it to any particular bank. As Jerry put it --it almost sounded like a diesel. Timing chain maybe? Maybe this is normal on the 225?

    I looked into the valve covers while still running and could see some oil at the bottom.

    Any ideas?
     
    michigan_pinstripes, Oct 31, 2004
    #1
  2. Oct 31, 2004
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,517
    no great sea of oil to be found in the those valve covers
    take a long handled screwdriver and put on timing cover while engine is running
    put ear down to handle and listen
    whatever noise is inside will be heard on that handle
    BE VERY CAREFUL WHILE DOING THIS...PERSONAL INJURY VERY POSSIBLE IF CARE NOT TAKEN !!!!!!!!!
    sometimes you can just feel it with your hand on the handle
     
    jpflat2a, Oct 31, 2004
    #2
  3. Oct 31, 2004
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    The timing chains are notorious for slapping the cover when they get loose, and/or the tensioner wears. Usually only make noise at idle.
     
    Patrick, Oct 31, 2004
    #3
  4. Oct 31, 2004
    michigan_pinstripes

    michigan_pinstripes I'm not lost, I'm wandering

    Clarkston MI...
    Joined:
    Aug 20, 2003
    Messages:
    605
    I already listened to the engine with a piece of wood (couldn't find short broomhandle) and the sound was consistent everywhere.

    The tensioner is a good place to start.
     
    michigan_pinstripes, Oct 31, 2004
    #4
  5. Oct 31, 2004
    termin8ed

    termin8ed I didn't do it Staff Member

    Mason, MI
    Joined:
    Dec 22, 2002
    Messages:
    4,422
    You did check the oil level, right??

    just checkin ;)

    Glad to hear you guys got it running.
     
    termin8ed, Oct 31, 2004
    #5
  6. Nov 1, 2004
    66cj5

    66cj5 Jeep with no name

    NorthWest Indiana
    Joined:
    Sep 10, 2003
    Messages:
    2,084
    mine makes a similar noise. have it narrowed down to passenger bank, middle to rear (isn't aways in same place either :mad: ) doesn't matter about engine speed. no change in pitch/whine/tone. never heard on driver side, might have to do w/occasional back fire though on pass side?
    sticking lifter on 4/6?
     
    66cj5, Nov 1, 2004
    #6
  7. Nov 1, 2004
    Jeepenstein

    Jeepenstein Me like Jeep..

    North Central FL
    Joined:
    Jun 15, 2003
    Messages:
    2,154
    MIne was making some funky noises a few years ago and come to find out the tensioner had broken off so the chain was floppier than a puppy dogs ear.. I also had a lot of wear in the rockers from the lack of oil caused by the timing chain eating itself and throwing metal into the oil pan and clogging the oil pickup....


    BUBBA
     
    Jeepenstein, Nov 1, 2004
    #7
  8. Nov 1, 2004
    xz3ltt

    xz3ltt I love hockey mom's

    Clarkston, MI
    Joined:
    Apr 3, 2004
    Messages:
    96
    Tying to recall how to replace the tension adjuster on a v-6. Assume I have to remove the harmoic balancer, wtr pump and front cover, right?
     
    xz3ltt, Nov 1, 2004
    #8
  9. Nov 1, 2004
    xz3ltt

    xz3ltt I love hockey mom's

    Clarkston, MI
    Joined:
    Apr 3, 2004
    Messages:
    96

    Yep, checked oil prior to starting it. Full of oil and no leaks!
     
    xz3ltt, Nov 1, 2004
    #9
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