LS2 V6-3.0L VIN R (2000)
The minimum compression in any one cylinder should not be less than 70 percent of the highest cylinder. No cylinder should read less than 690 kPa
(100 psi).
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Normal Compression: Builds up quickly and evenly to specification in each cylinder.
-
Low Compression: Damaged piston, ring(s), valve(s), or head gasket.
-
High Compression: Carbon on pistons/combustion chamber.
IMPORTANT: A cylinder leakage test can be performed to further determine location of compression Leakage if one or more cylinders are
extremely low.
8. If the cylinder compression in one or more cylinders is low, pour a small amount (one teaspoon) of engine oil into the cylinder through the spark
plug hole.
9. Place a shop towel over plug holes to capture any oil mist/spray.
10. Crank the engine over for a few seconds without the compression gauge or spark plugs installed.
