Engine Compression

1993 Jeep Cherokee Base, 2D Utility, 2.5 P, RWDSECTION Engine Compression

Check engine compression with engine at normal operating temperature, all spark plugs removed and throttle wide open.

NOTE: Compression pressure and cylinder pressure variation for 2.5L and 4.0L engines are not available from manufacturer at time of publication.
COMPRESSION SPECIFICATIONS

Application Specification
2.5L
Cherokee 9.2:1
Wrangler 9.1:1
4.0L 8.8:1
5.2L 9.1:1
Normal Compression Pressure 120-150 psi (827-1034 kPa)
Minimum Compression Pressure 100 psi (689 kPa)
Maximum Variation Between Cylinders 5 psi (172 kPa)
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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.