2000 Chevy Tahoe Valve Job

2000 CHEVROLET TAHOE
68,500 MILES • V8 • 4WD • AUTOMATIC
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TEXASRED47
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Tahoe was running poorly. Mechanic said plugs and wires needed. Now runs great on the road, but a very rough idle once it heats up. Now he says it has low pressure in one cylinder and needs an expensive valve job...anything I can do?
May 26, 2009 at 2:11 PM
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JACOBANDNICKOLAS
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A cylender with low compression is ususally felt regardless of engine speed. Did he tell you what the compression was for each cylender? Also, cold or hot, low compression is felt. I would recommend having the compression retested. It's not hard to do. Here is a how to for checking compression. The gauge can be purchased from this site, or some parts stores will rent them.

https://www.2carpros.com/dia/how_to_check_compression.htm

Let me know what you find. That way we can be sure if this is the problem. Also, keep in mind, this vehicle has low mileage; therefore, I really think we need to look at something else. That is my gut feeling.

Joe
Jun 9, 2009 at 11:35 PM