#Plastic Mallet Test

The $80,000 Hammer Test: Why Toyota Is Using Plastic Mallets to Diagnose Exploding Twin-Turbo V6 Engines

Toyota has issued a remarkable technical service bulletin directing dealers to use plastic mallets to tap on engine components as a diagnostic method for identifying defective twin-turbo V6 engines prone to catastrophic failure — and the stakes couldn't be higher for owners of $80,000-plus vehicles.