As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON ENGINE START UP - PILOT REPORTED MGB CHIP LIGHT ON, PULSED OFF AND 4 SECONDS LATER LIGHT BACK ON. ENGINE SHUT DOWN, MAG PLUG PULLED 2 SMALL FLAKED AND SOME FUZE ON PLUG. FINE OIL FILTER REMOVED AND FOUND TO BE CONTAMINATED WITH NUMEROUS, VARIOUS SIZED PARTICLES. AIRCRAFT REMOVED FROM SERVICE PENDING MGB CHANGE.