Circuit/System Description

The Engine Cranks but Does Not Run diagnostic table is an organized approach to identifying a condition that causes an engine not to start. The Engine Cranks but Does Not Run diagnostic table directs the service technician to the appropriate system diagnosis.

The Engine Cranks But Does Not Run diagnostic table assumes the following:

• The batteries are completely charged. Refer to Battery Inspection/Test (Non-HP2) or Battery Inspection/Test (HP2) .
• The cranking speed is within specifications. Refer to Engine Cranks Slowly .
• There is adequate fuel in the fuel tanks.