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

ENGINE COMPRESSION SPECIFICATIONS

Application

Specification

Normal Compression Pressure

1.0L

⁽¹⁾ 199 psi (14.0 kg/cm² )

1.3L

⁽¹⁾ 192 psi (13.5 kg/cm² )

1.8L

⁽¹⁾ 218 psi (15.3 kg/cm² )

1.9L

190 psi (13.4 kg/cm² )

2.2L, 2.4L, 3.0L, 3.1L, 3.4L, 3.8L & 5.7L

⁽²⁾

3.5L & 4.6L

⁽³⁾

Minimum Compression Pressure

1.0L & 1.3L

⁽¹⁾ 156 psi (11.0 kg/cm² )

1.8L

⁽¹⁾ 145 psi (10.2 kg/cm² )

1.9L

180 psi (12.7 kg/cm² )

2.2L, 2.4L, 3.0L, 3.1L, 3.4L, 3.8L & 5.7L

⁽²⁾

3.5L & 4.6L

⁽³⁾

⁽¹⁾	No cylinder compression reading should be less than 15 psi (1.1 kg/cm² ) of highest compression reading.

⁽²⁾	Lowest compression reading should not be less than 70 percent of highest compression reading. No cylinder compression reading should be less than 100 psi (7.0 kg/cm² ).

⁽³⁾	Lowest compression reading should not be less than 70 percent of highest compression reading. No cylinder compression reading should be less than 140 psi (9.8 kg/cm² ).

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.

Safety Warning

Engine Compression