All NA & NB Miatas

Spark plug

11–17 ft·lb15–23 N·m15–23 N·m11–17 ft·lb
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
Lubrication
Anti-seize or molybdenum-based lubricant on the threads (per the manual)
Applies to
  • NA 1990–1993 (B6)
  • Verified in: 1990 Mazda MX-5 Miata Workshop Manual
Sources