Noisy Lifters
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Northstar Engines and System Technical Discussion Discussion, Noisy Lifters in Cadillac Engine Technical Discussion; '98 Deville w/ Northstar and 102,000 miles. Lifter noise continues after having been replaced. Mechanic states they need time to ...
  1. #1
    tedd is offline Cadillac Owners Member
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    Noisy Lifters

    '98 Deville w/ Northstar and 102,000 miles. Lifter noise continues after having been replaced. Mechanic states they need time to charge. Any suggestions? Thanks

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  3. #2
    Elmer Fudd is offline Cadillac Owners Fanatic
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    Re: Noisy Lifters

    well Tedd I hoped someone who knows about this stuff had an answer for you, because I don't know enough to offer anything.

    Supposedly weak or semi-collapsed lifters can take 10 -15 minutes to "pump up".....but brand new???? Sheesh I would think it would be pretty quick.

    GL

  4. #3
    eldorado1 is offline Cadillac Owners Connoisseur
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    Re: Noisy Lifters

    They can get some air trapped in them. Switch to a thinner oil if you haven't already... That will work the air out as they bleed down. It will be noisier on startup, but after a few weeks should be okay.

  5. #4
    tedd is offline Cadillac Owners Member
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    Re: Noisy Lifters

    I was hoping for more input as well; Thanks for your replies.

    Any other suggestions for this situation?

  6. #5
    Elmer Fudd is offline Cadillac Owners Fanatic
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    Re: Noisy Lifters

    Did you get this done at a Cadillac dealer ? If not, perhaps you could ask them (service dept.) their input?

  7. #6
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    aamusls06 is offline Cadillac Owners Fanatic
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    Re: Noisy Lifters

    ok, i'm confused now. i too have this problem on my cadillac, except mines clacks after it has ran for a while. i can first crank it in the morning and not here it. i added the marvels mystery oil and reduced the noise a small amount, but now it's back at it again.

    i guess i want to ask is it worth getting fixed, because i have driven it 6000 miles since april and haven't had any problems with it.

    please give me some input guys.

  8. #7
    Elmer Fudd is offline Cadillac Owners Fanatic
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    Re: Noisy Lifters

    Mine ticks off and on (99 n* 111K). Started at about 105K (previous owner). Maintenance log at dealer shows service manager told her is is not worth tearing the motor apart to try and fix, (and she is a doctor so she had the $$ to do it if they had said to) his report said "drive it until the noise quits."

    I asked the service tech there that I have known for 15 years and she said the same. It is not unusual on these cars with hi miles and try to just ignore it.

    MM Oil has helped a lot, but not cured it (so far - ran about 400 miles).

    It is wierd, it comes and goes. Sometimes, quiet as can be, ...others, it ticks like a package from Hezbullah......

  9. #8
    white97deville is offline Cadillac Owners Member
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    Re: Noisy Lifters

    I've read that some people have had good success quieting noisy lifters by running some Seafoam in the crankcase for a short while. I'm not speaking from personal experience.

  10. #9
    dkozloski's Avatar
    dkozloski is offline Cadillac Owners 10000+ Posts
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    Re: Noisy Lifters

    A North* does not have hydraulic lifters, it has hydraulic lash adjusters. I have found several references to a bleed procedure to get the air out of them but no details. I would go looking in a Helms manual.

  11. #10
    unruley247 is offline Cadillac Owners Fanatic
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    Re: Noisy Lifters

    I ran seafoam in my 96 deville the tapping was killing me mech suggested said its the best thing hed seen remove clean and queit lifters without side effect 1 1/2 yrs later 228,000 miles no tap and running like a top.

  12. #11
    chazglenn3's Avatar
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    Re: Noisy Lifters

    I wouldn't say that there are no potential side effects with Seafoam. The Seafoam quieted down my noisy lifter, but also cleaned the crankcase of all the deposits that was keeping my car from leaking oil. Leaks like a sieve now...

  13. #12
    Elmer Fudd is offline Cadillac Owners Fanatic
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    Re: Noisy Lifters

    Quote Originally Posted by unruley247
    I ran seafoam in my 96 deville the tapping was killing me mech suggested said its the best thing hed seen remove clean and queit lifters without side effect 1 1/2 yrs later 228,000 miles no tap and running like a top.

    How long did you leave the sea foam in? An entire oil change period, or just a few 100 mi.?

  14. #13
    eldorado1 is offline Cadillac Owners Connoisseur
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    Re: Noisy Lifters

    Don't use sea foam in your engine oil. It contains water and isopropanol, neither of which you want to add into your oil.

  15. #14
    unruley247 is offline Cadillac Owners Fanatic
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    Re: Noisy Lifters

    I used it and had no side effects no new leaks no tapping nothing bad to say and i ran it for 1500 miles before removing oil and i hit I80 and I57 everyday doing at least 75-80 with 228,000 miles and counting

  16. #15
    tedd is offline Cadillac Owners Member
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    Re: Noisy Lifters

    The work was done at an independent garage,which after replacing the lifters, was told by Cadillac to replace the oil pump. The noise continues even after oil pump replacement. Any thoughts?

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