Updated specs are available.
Compression pressure — maximum cylinder difference (NA6)
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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.
28 psi (196 kPa; 2.0 kg/cm²)196 kPa (2.0 kg/cm², 28 psi)
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: “196 kPa (2.0 kg/cm², 28 psi)”
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