Updated specs are available.
Base ignition timing (NA6)
This spec doesn't apply to the car you selected.
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.
10° ± 1° BTDC at idle speed
Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure
Warm engine to normal operating temperature, accessories off, transmission neutral. Use the specified system selector in SELF TEST or connect TEN to GND at the diagnosis connector. Do not ground the separate blue one-pin power connector. Remove the jumper/SST after adjustment.
Applies to
- NA 1990–1993 (B6, 5MT) — Other years in this family inferred from 1990 factory evidence with owner approval; actual-year verification is separate.
- Verified in: 1990 Mazda MX-5 Miata Workshop Manual
Sources
- Part no. 1193-10-89CPage B–8 (PDF p. 35)Printed: “Ignition timing: 10° ± 1° BTDC (at idle speed)”
Also in Additional factory manual gap audit
- Front brake disc minimum thickness — 255 mm rotor
- Front brake disc after-machining thickness — 255 mm rotor
- Front brake disc minimum thickness — 270 mm rotor
- Front brake disc after-machining thickness — 270 mm rotor
- Front brake disc lateral runout limit
- Front brake disc thickness variation limit
- Front brake pad minimum remaining thickness
- Rear brake pad minimum remaining thickness
- Rear brake disc minimum thickness
- Rear brake disc after-machining thickness
- Rear brake disc runout limit
- Clutch pedal pivot bolt (NA6)
- Clutch pedal height (NA6)
- Clutch pedal free play (NA6)
- Clutch pedal total free play (NA6)
- Clutch pedal disengagement height — minimum (NA6)
- Clutch pedal height (NA 1.8)
- Clutch pedal free play (NA 1.8)
- Clutch pedal total free play (NA 1.8)
- Clutch pedal minimum disengagement height (NA 1.8)
- Clutch pedal height (NB1)
- Clutch pedal free play (NB1)
- Clutch pedal total free play (NB1)
- Clutch pedal minimum disengagement height (NB1)
- Clutch pedal height (NB2)
- Clutch pedal free play (NB2)
- Clutch pedal total free play (NB2)
- Clutch pedal minimum disengagement height (NB2)
- Clutch disc lining above rivet head — minimum
- Clutch disc runout — maximum
- Engine coolant type and antifreeze mixture (NA6)
- Engine coolant type and antifreeze mixture (NA 1.8)
- Engine coolant type and antifreeze mixture (NB1)
- Engine coolant type and antifreeze mixture (NB2)
- PPF installation height check — six-speed manual (NB2/Mazdaspeed)
- Engine mount bracket to block bolts — left and right (NA6)
- Catalytic converter flange nuts, both ends (NA 1.8)
- Engine idle speed — adjustment condition (NA6)
- Accelerator cable free play (NA6)
- Fuel injector resistance (NA6)
- ISC valve solenoid resistance (NA6)
- Fuel pump maximum pressure — blocked-outlet test (NA6)
- Fuel line pressure — engine off, pump operating (NA6)
- Intake manifold bracket bolts (NA6)
- Fuel line pressure — engine idling (NA6)
- A/C oil addition — new complete cooling unit (2005)
- Spark plug gap (NA6)
- Engine firing order (NA6)
- Spark plug gap (NA 1.8)
- Spark plug gap (NB1)
- Spark plug gap (NB2)
- Spark plug gap (Mazdaspeed)
- Power steering pump bracket to engine bolts (NA6)
- Front total toe-in (NA6)
- Front camber by wheel-center-to-fender height (NA6)
- Front caster by wheel-center-to-fender height (NA6)
- Front shock lower mounting bolt (NA6)
- Front crossmember to body mounting bolts and nuts (NA6)
- Rear total toe-in (NA6)
- Rear camber by wheel-center-to-fender height (NA6)
- Rear crossmember mounting fasteners to body (NA6)