Showing specs for all NA & NB Miatas

Fuel injector injection volume (NB2, non-turbo)

≈2.2317–2.7727 US fl oz (66–82 ml) per 15 s66–82 ml per 15 s

Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Engine stopped; factory pump and injector/SST test setup, PDF pp. 701–703. Collect each injector output in a graduated container over 15 s. Printed ml is authoritative; the source imperial bounds are inconsistent. This is a test quantity, not a system fluid capacity.

Applies to
  • NB 2001–2005 (BP-Z3) — Other years inferred from 2003 factory evidence.
  • Verified in: 2003 Mazda MX-5 Miata Workshop Manual (electronic manual capture)

Sources (1)

View 1 source citations
  • 2003 Mazda MX-5 Miata Workshop Manual (electronic manual capture)Tier 1
    Page Fuel Injector Inspection — Fuel Leakage and Volume Test (PDF p. 703) · Printed value & notes
    Page Fuel Injector Inspection — Fuel Leakage and Volume Test (PDF p. 703)
    Printed: “Injection volume 66—82 ml {66—82 cc, 2.3—2.7 fl oz}/15 s.”