Sticky lifter?

Discussion in 'Engine Topic' started by ULTM8Z, Sep 19, 2019.

  1. ULTM8Z

    ULTM8Z Veteran Member

    Messages:
    9,087
    Likes Received:
    311
    Joined:
    May 19, 2000
    Location:
    Los Angeles
    I got my ZZ4 in (I think it was) 1999, so the engine is ~20 years old. Probably ~50k miles for the amount of mileage I've been putting on it (~2500/year).

    Lately when the car sits for a week or more, one of the lifters starts clacking upon start up for about 20-30 seconds before finally settling down.

    The engine has had nothing but Mobile 1 synthetic in it from the get-go. Is there some additive you guys would recommend to resolve this?
     
  2. Gary S

    Gary S Administrator Lifetime Gold Member

    Messages:
    22,318
    Likes Received:
    724
    Joined:
    Apr 14, 1999
    Location:
    Bismarck, North Dakota
    I rarely use any oil or gas additives because most of them tend to be useless. Clean oil and gas are usually all the engine needs.
    The only additive I've ever added to the oil was in engines with flat tappet cams driven in winter where lots of condensation gets into the oil from short trips that don't warm the engine fully.
    In cold weather, the moisture in the oil tends to kill the ability of the detergents in the oil to keep the lifters moving freely. Once in a while I would have a noisy lifter at startup. When that happened, I would add a can of Stewart Warner CD2 oil detergent. (They no longer make it.)

    In your climate, that isn't an issue. On your engine I would more suspect that you are experiencing a bit of cam lobe wear. If it wears just slightly, it takes a few seconds longer to pump up than the other lifters. If that is the case, it isn't a big cause of worry unless it continues. The Mobil 1 just might lube well enough that additional wear might not happen.
     
  3. biker

    biker Veteran Member

    Messages:
    767
    Likes Received:
    55
    Joined:
    Dec 7, 2014
    Location:
    New Liskeard Ontario Canada
    If it is some kind of goo or dirt slowing a lifter from pumping up, get the engine warm and try adding a quart of trans fluid and run it for 5 minutes or so. Don't run above idle. Lots of detergent in that stuff, and it will thin out the oil and maybe get into your sticky lifter better. Change oil and filter and see if it got better.

    If not, it's probably a bit worn like Gary said.

    Trans fluid can't possibly be worse than some of the rip-off potions out there. I used it regularly in many older engines, never did any harm.
     
    cadillac_al likes this.
  4. Knuckle Dragger

    Knuckle Dragger Mayor of Simpleton Staff Member Lifetime Gold Member

    Messages:
    14,625
    Likes Received:
    1,233
    Joined:
    Nov 2, 2002
    Location:
    Waddell AZ
    ^^^^ Trans fluid "flush" has been a old school remedy for noisy lifters for as long as I can remember.
     
  5. mallard

    mallard Veteran Member

    Messages:
    474
    Likes Received:
    88
    Joined:
    Oct 3, 2013
    Location:
    SK, Canada
    Does GM still make EOS? That stuff works pretty good on engines that rattle a bit.
     
  6. ULTM8Z

    ULTM8Z Veteran Member

    Messages:
    9,087
    Likes Received:
    311
    Joined:
    May 19, 2000
    Location:
    Los Angeles
    I was thinking about a little marvel mystery oil.

    I started up the car today (last time I drove it was Monday afternoon). Quiet as a mouse.

    Like I said, it's typcally if it's been sitting for more than a week...
     
  7. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

    Messages:
    10,214
    Likes Received:
    415
    Joined:
    Nov 4, 2004
    Location:
    Ringgold, GA
    My new crate engine with LS7 lifters have always been a bit noisy on start up, just doesn't bother me. I did use Marvel Mystery oil in an old 307 years ago, worked well in cleaning out the sludge. YMMV
     
  8. COPO

    COPO Veteran Member Lifetime Gold Member

    Messages:
    17,633
    Likes Received:
    651
    Joined:
    Sep 15, 1999
    Location:
    Ontario, Canada
    GM still sells EOS which is meant for lifters and breakin back in the old days but still should work today for a noisy lifter.
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.