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Radiator cap pressure test (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.
11–15 psi (74–103 kPa; 0.75–1.05 kg/cm²); hold about 10 s74–103 kPa (0.75–1.05 kg/cm², 11–15 psi); hold about 10 s
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
Remove cap only from a cool engine. Clean residue from cap valve and seat. Attach to cap tester with correct adapter, apply pressure gradually and wait about 10 seconds; verify pressure has not decreased. Cap test, not cooling-system leak-test pressure.
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 E–6 (PDF p. 136) · Printed value & notes
Part no. 1193-10-89CPage E–6 (PDF p. 136)Printed: “74—103 kPa (0.75—1.05 kg/cm², 11—15 psi)”
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