Updated specs are available.
Compression pressure — standard (NA6)
This spec doesn't apply to the car you selected.
Not yet checked against the factory manual for your car's year. It's verified in the 1990 Mazda MX-5 Miata Workshop Manual; later manuals may differ.
1,192 psi (324 kPa; 13.5 kg/cm²) - 300 rpm1,324 kPa (13.5 kg/cm², 192 psi) - 300 rpm
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
Warm engine to normal operating temperature; fully charged battery, all spark plugs removed, ignition-coil connector disconnected, accelerator fully depressed. Record maximum pressure while cranking; compare all cylinders at the specified 300 rpm.
Applies to
- NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.
- Verified in: 1990 Mazda MX-5 Miata Workshop Manual
Sources (1)
View 1 source citations
Page B–10 (PDF p. 37) · Printed value & notes
Part no. 1193-10-89CPage B–10 (PDF p. 37)Printed: “1,324 kPa (13.5 kg/cm², 192 psi) - 300 rpm”
Related service specs
- Accessory drive belt deflection — new belt (NA6)
- Accessory drive belt tension — new belt (NA6)
- Accessory drive belt deflection — used belt (NA6)
- Accessory drive belt tension — used belt (NA6)
- Compression pressure — minimum (NA6)
- Compression pressure — maximum cylinder difference (NA6)
- Cylinder head gasket face distortion — maximum (NA6)
- Cylinder head height (NA6)