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Cylinder compression — minimum (NB1)
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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.
146 psi (1009 kPa; 10.29 kgf/cm²) minimum at 300 rpm1009 kPa {10.29 kgf/cm², 146 psi} minimum at 300 rpm
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: “Compression kPa {kgf/cm², psi} [rpm] Minimum 1009 {10.29, 146} [300]”
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