Engine Compression

1994 Plymouth Colt Vista Base, 2.4 G, AutomaticSECTION Engine Compression

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

COMPRESSION SPECIFICATIONS

Application (1) Specification
Compression Ratio
1.8L (VIN C) 8.5:1
2.4L (VIN G)
8-Valve 8.5:1
16-Valve 9.5:1
Compression Pressure
1.8L (VIN C) 199 psi (13.9 kg/cm2 )
2.4L (VIN G)
8-Valve 171 psi (12.0 kg/cm2 )
16-Valve 185 psi (13.0 kg/cm2 )
Maximum Variation Between Cylinders 14 psi (1.0 kg/cm2 )
(1) See ENGINE/VIN ID article for VIN information.
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.