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 MANUALSJEEP2014GRAND CHEROKEE LAREDO, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 1 (3.0L TURBO DIESEL (SERVICE INFORMATION))DIAGNOSIS AND TESTINGCOMPRESSION TEST
2014 Jeep Grand Cherokee Laredo, AWD
Compression Test
2014 Jeep Grand Cherokee Laredo, AWDSECTION Compression Test
WARNING: This page is about a different variant/trim than selected.
- Warm up engine to operating temperature (approximately 80 °C, 176 °F).
- Shut off engine.
- Disable the low pressure fuel pump.
- Remove the fuel injector. Refer to INJECTOR(S), FUEL, REMOVAL .
- Crank engine several times with the starter to eliminate combustion residues in the cylinders.
- Insert the (special tool #VM.10357, Adapter, Compression Test) (3) into fuel injector hole of cylinder to be tested. Install fuel injector clamp (1), bolt (2) and securely tighten.
- Test compression pressure by cranking engine with starter for at least 8 revolutions.
Cylinder Compression Difference Between Cylinders 5 Bar (73 psi) - Carry out test procedure at the remaining cylinders in the same way.
- Remove the (special tool #VM.10357, Adapter, Compression Test) from cylinder head.
- Install the fuel injector. Refer to INJECTOR(S), FUEL, INSTALLATION .
RENDER: 1.0x
NO RELATED
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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.