Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 608 (ENGINE MECHANICAL - 2.2L)DIAGNOSTICSENGINE COMPRESSION TEST
2004 Oldsmobile Bravada AWD
Engine Compression Test
2004 Oldsmobile Bravada AWDSECTION Engine Compression Test
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Perform the following steps in order to conduct a compression test for the L61.
- Conduct the following steps in order to check cylinder compression.
- 1.1 Engine should be at room temperature.
- 1.2 Disconnect wiring from the ignition module.
- 1.3 Remove the spark plugs.
- 1.4 Throttle body valve should be wide open.
- 1.5 Battery should be at or near full charge.
- For each cylinder, crank engine through four compression strokes.
- The lowest reading cylinder should not be less than 70% of the highest.
- No cylinder reading should be less than 689 kPa (100 psi).
IMPORTANT: The results of a compression test will fall into the following categories:
- Normal - Compression builds up quickly and evenly to specified compression on each cylinder.
- Piston Rings - Compression low on first stroke. Tends to build up on following strokes but does not reach normal. Improves considerably with addition of oil.
- Valves - Compression low on first stroke. Does not tend to build up on the following strokes. Does not improve much with the addition of oil. Use approximately three squirts from a plunger-type oiler.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.