Question about 1994 Cadillac Eldorado

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My 1994 cadillac eldorado is knocking hard its comeing from the top end ........maybe a bent lifter of valve idk im just guessing though

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Probably a failed lifter. Is it a tapping/clicking sound? You can troubleshoot by taking off the valve cover. Put some rags down around the head to catch the oil that will splatter when you start the engine. Run the engine with the cover off for just long enough to see which lifter is not pumping oil or opening it's valve. If this is clearly indicated, the lifter must be replaced to avert further engine damage.

Posted on Sep 03, 2010

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