Engine tapping noise

1998 OLDSMOBILE CUTLASS
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BDALE2099
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Engine Mechanical problem 6 cyl Front Wheel Drive Automatic 215000 miles

I was pulling a trailer when my car over heated up a mountain road, I turned the heater on and the tempature gage went down. I stayed the night, the next morning when I started my car, there was this loud tapping noise in the engine. I filled my car with gas and opened the hood to check the fluid levels and saw my radiator hose had a leak. I got that repaced and dove it another 10 hours with the heater on high to keep the engine tempature down. I had the local GM garage replace the lifters, thinking this was the problem, but the load tapping noise is still there. The mechanic said the oil looked good when he had it apart. I'm from New York State and visiting my daughter in Florida.

What do you think the problem could be?
Feb 20, 2010 at 11:38 AM
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MERLIN2021
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Did the guy who did the lifters agree they needed to be replaced? Sounds more like an oil pressure problem, or worn engine parts causing low oil pressure, when a car overheats, and is driven overheating, it doesnt take long to reuin bearing surfaces. Check oil pressure!
Feb 21, 2010 at 8:26 AM
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BDALE2099
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There's no problem with the oil pressure. The mechanic said that 2 of the lifter were really worn. He thought the all the lifters should to be replaced if any of them were replaced. Which is what was done.
Feb 22, 2010 at 7:47 PM
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MERLIN2021
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First thing I need is the engine size and oil pressure readings at idle and 2000 rpm, can you post that?
Feb 23, 2010 at 2:43 AM
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BENJAMIN JWEED
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I have a 1998 Oldsmobile cutlass that has 133,346 miles on it and there is a tapping noise every time I turn the car on last time it overheated it was 260 degrees I don't know what's wrong with it
Oct 20, 2017 at 2:11 PM
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BENJAMIN JWEED
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If you can text my phone and let me know what you think I would really appreciate it 312-383-0490
Oct 20, 2017 at 2:14 PM
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STRAILER
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Hi Ben,

Can you make a quick video with your phone of the noise and upload it here so I can see whats going on?

Cheers, Ken
Oct 21, 2017 at 11:23 AM