Updated specs are available.
Cylinder compression — maximum difference (NA8)
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Not yet checked against the factory manual for your car's year. It's verified in the 1994 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
Fully charged battery; warm engine to normal operating temperature, then turn off. Remove all spark plugs, disconnect ignition-coil connector, connect compression gauge and crank with accelerator fully depressed. Record maximum reading at 300 rpm for each cylinder.
Applies to
- NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.
- Verified in: 1994 Mazda MX-5 Miata Workshop Manual
Sources (1)
View 1 source citations
- 1994 Mazda MX-5 Miata Workshop ManualTier 1
Page B–10 (PDF p. 47) · Printed value & notes
Page B–10 (PDF p. 47)Printed: “Differential limit between cylinders: 196 kPa {2.0 kgf/cm², 28 psi}”
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