Updated specs are available.
Cylinder compression — maximum difference (NB1)
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 1999 Mazda MX-5 Miata Workshop Manual; later manuals may differ.
28 psi (196 kPa; 2.0 kgf/cm²) maximum difference196 kPa {2.0 kgf/cm², 28 psi} maximum difference
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
Verify battery fully charged. Warm engine to normal operating temperature, stop and allow to cool about 10 min. Perform factory fuel-line safety procedure and leave fuel-pump relay removed. Remove spark plugs and disconnect ignition-coil connector. Crank with accelerator fully depressed at 300 rpm and record maximum gauge reading for each cylinder. Values independently repeated in technical data 01–50–1 (PDF312).
Applies to
- NB 1999–2000 (BP-4W) — Other years inferred from 1999 factory evidence.
- Verified in: 1999 Mazda MX-5 Miata Workshop Manual
Sources (1)
View 1 source citations
Page 01–10–5 (PDF p. 200) · Printed value & notes
Page 01–10–5 (PDF p. 200)Printed: “Maximum difference between cylinders 196 kPa {2.0 kgf/cm², 28 psi}”
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 — standard (NA6)
- Compression pressure — minimum (NA6)
- Compression pressure — maximum cylinder difference (NA6)
- Cylinder head gasket face distortion — maximum (NA6)