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HOMESERVICE MANUALSJEEP2014GRAND CHEROKEE LAREDO, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 1 (3.0L TURBO DIESEL (SERVICE INFORMATION))STANDARD PROCEDUREHYDROSTATIC LOCK
2014 Jeep Grand Cherokee Laredo, AWD

Hydrostatic Lock

2014 Jeep Grand Cherokee Laredo, AWDSECTION Hydrostatic Lock
WARNING: This page is about a different variant/trim than selected.
CAUTION:

DO NOT use the starter motor to rotate the crankshaft. Severe damage could occur.

When an engine is suspected of hydrostatic lock (regardless of what caused the problem), follow the steps below.

  1. Disconnect the negative cable(s) from the battery.
  2. Inspect air cleaner, induction system, and intake manifold to ensure system is dry and clear of foreign material.
  3. Place a shop towel around the fuel injectors to catch any fluid that may possibly be under pressure in the cylinder head. Remove the fuel injectors. Refer to INJECTOR(S), FUEL, REMOVAL .
    CAUTION:

    DO NOT use the starter motor to rotate the crankshaft. Severe damage could occur.

  4. With all injectors removed, rotate the crankshaft using the crankshaft.
  5. Identify the fluid in the cylinders (coolant, fuel, oil, etc.).
  6. Be sure all fluid has been removed from the cylinders.
  7. Repair engine or components as necessary to prevent this problem from occurring again.
  8. Squirt a small amount of engine oil into the cylinders to lubricate the walls. This will prevent damage on restart.
  9. Install fuel injectors. Refer to INJECTOR(S), FUEL, INSTALLATION .
  10. Drain engine oil. Remove and discard the oil filter.
  11. Install the drain plug. Tighten the plug to 50 N.m (37 ft. lbs.).
  12. Install a new oil filter and tighten to 10 N.m 88 in. lbs.).
  13. Fill engine crankcase with the specified amount and grade of oil. Refer to CAPACITIES AND RECOMMENDED FLUIDS, SPECIFICATIONS .
  14. Connect the negative cable(s) to the battery.
  15. Start the engine, allow to warm, turn engine off and check for any leaks.
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.