Tuesday, 11 August 2026
A practical, DIY-friendly guide to tracking down an MX-5 misfire. It explains what a misfire actually is and why it happens, then works through the likely causes in the order an owner should check them: spark plugs first, ignition leads on Mk1/Mk2 (NA/NB) cars, coil packs on the NC and ND, and fuel delivery if the ignition side checks out clean. The aim is to help owners diagnose systematically, spotting what plug condition and fault codes reveal, rather than replacing parts on guesswork.









