Troubleshooting - EZ-Start Battery
The battery to the EZ-Start® must be fully charged for the best performance. If the battery is weak, the EZ-Start may appear to be spinning the engine fast enough to start however, there is not enough current to adequately light the glow plug. This will prevent the engine from starting or make it slow to start. Charge your EZ-Start battery fully or use a separate glow plug igniter (available from your hobby dealer) to solve the problem.