Question 1

The engine will not crank at all. The fault is most likely…

Accepted Answer

Electrical — battery, terminals, isolator or solenoid — Won’t-crank is electrical; cranks-but-won’t-fire is fuel or air. That split saves hours of guessing.

Question 2

With the engine running, the battery voltage should read roughly…

Accepted Answer

13.8–14.4 V, showing the alternator is charging — A running engine should show ~13.8–14.4 V. About 12.6–12.8 V is a healthy rested battery; charging lifts it.

Starting and the electrical circuit

This lesson is part of a paid course