Question about 1998 Buick LeSabre

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My 1998 Buick Lesabre ,I just had an oil change, it just developed has noisy lifters. Also the antifreeze reservoir is always losing the fluid, I am always refilling.

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Suggest you check your exhaust on startup, is it very steamed up. Unless you see fluid on the ground after you have been driving, it may be being burnt inside the engine via a leaking head gasket, causing part of the head to misfire, 1 or 2 cyls. Is the oil milky? a sure sign of a leaking manifold gasket. At the end of the day, the coolant must be going somewhere, if its not on the floor, its in the head/manifold. A manifold leak is not so bad, Head gasket is not so good..worth doing a compression test and block test if you can.Also, change the oil again and put in at lest 10W-30 weight, your car is too old for 5/20 5/30...Hope that helps..Tim

Posted on May 26, 2010

  • forbinew May 26, 2010

    I was told there is no oil getting to the lifters.

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If the preceding check indicates the valve mechanism is abnormally noisy, remove the rocker arm covers so that the various conditions that cause noise may be checked. A piece of heater hose of convenient length may be used to pick out the particular valves or valve train components that are causing abnormal noise. With the engine running at a speed where the noise is pronounced, hold one end or hose to an ear and hold other end about 1/2" from point of contact between rocker arm and valve stem. Mark or record the noisy valves for investigation of following causes.

  1. Excessive Oil In Crankcase. Crankcase oil level high enough to allow the crankshaft to churn the oil will cause air bubbles in the lubricating system. Air bubbles entering the hydraulic lifters will cause erratic operation resulting in excessive lash in the valve train. Locate and correct cause of high oil level, then run engine long enough to expel air from system.
  2. Sticking, Warped or Eccentric Valves, Worn Guides. Sticking valves will cause irregular engine operation or missing on a low speed pull and will usually cause intermittent noise. Pour penetrating oil over the valve spring cap and allow it to drain down the valve stem. Apply pressure to the one side of the valve spring and then the other, and then rotate the valve spring about 1/2 turn. If these operations affect the valve noise, it may be assumed that valves should be reconditioned.
  3. Worn or scored parts in the valve train. Inspect rocker arms, push rod ends for scoring. Check for bent push rods. Check valve lifters and camshaft surfaces for scoring. Replace faulty parts.
  4. Valves and seats cut down excessively. Noisy and improper valve action will result if a valve and its seat have been refinished enough to raise the end of the valve stem approximately .050" above normal position. In this case it will be necessary to grind off the end of the valve stem or replace parts. The normal height of the valve stem above the valve spring seat is 1.933 inches, for 350 cu. in. engines and 2.082 inches for 455 cu. in. engines.
  5. Faulty Hydraulic Valve Lifters. If the preceding suggestions do not reveal the cause of noisy valve action, check operation of valve lifters as described in paragraph 60-33, subparagraph c.

Posted on May 26, 2010

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  • Greg Bernett
    Greg Bernett May 26, 2010

    If you are losing antifreeze or are having to refill your reservoir, start first by starting the car in the driveway and then letting it idle for about 15-20 minutes. Look under the vehicle for a leak and keep sniffing the air for a sweet smell like antifreeze that is heating up on the engine block somewhere or kind of a foggy look coming from the exhaust pipe.



    If you have a leak coming from the engine...that is cool. It just may be a bad seal somehwere.



    If you have a slow leak from the radiator, like a pin hole, then that is a easy fix as well.



    If you see no external leaks, but you have sort of a foggy exhaust...then it is something internal. That could mean a bad head gasket, craked cylinder head, block, bad seal in the manifold...



    Let us know what you find out!

  • forbinew May 26, 2010

    I was told there is no oil reaching the lifters.

  • Greg Bernett
    Greg Bernett May 26, 2010

    Then you have a problem with your oil pump. Either it is bad....meaning not operating anymore, or, you have stuff caked up on the oil pump pick up screen....it is what hangs in the oil pan and sucks or pumps your oil to the motor.

  • forbinew May 26, 2010

    Thank you. By the way, will I have to purchase a bus pass now?

  • Greg Bernett
    Greg Bernett May 26, 2010

    Hehehe...not really....oil pump is pretty cheap and won't bust the wallet. Glad I could help!

  • Greg Bernett
    Greg Bernett May 26, 2010

    I stand corrected...it's the oil gear sprocket....either way, it is not pumping the oil to your motor.



    Call a few garages and see what it will cost to fix....should not be that much.

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1 Answer

How much does it cost to replace the lifters


Typically one does not replace all the lifters except during major engine overhaul and when Camshaft and Camshaft bearing is being replaced as well. It is much more common that noisy valve train is misdiagnosed and is really a sign of other problems. Noisy valves and upper end can be a sign of lowered oil pressure. As engines age and main bearing wears, oil pressure will naturally decline with time. However if excessive wear occurs, or if dirt / foreign object has clogged vital oil gallery supply, wear can accumulate much more rapidly.
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I would first get an idea of the overall condition of the engine. A dirty engine/lifters can first be treated by draining one quart of oil and replace with a quart of transmission fluid and run it for a day or two. The detergents can loosen and clean oil gallerys and lifters. Then drain, change filter, and fill with 10W-40 (4.5 quarts). Otherwise main bearing/oil pump renew or engine overhaul might be in order.

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