L300 V6-3.0L VIN R (2001)
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.
11. Repeat previous steps 4 through 7 and measure compression.
12. If adding oil increases compression readings:
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Pistons Rings Leaking: Compression low on first stroke (first gauge puff) and tends to build up on following strokes, but does not reach normal
compression pressure. Improves considerably with oil. Inspect for worn or broken ring(s) and piston ring land wear (pound out).
