I have a 1987 exMOD 90 with a 2.5 diesel .
Lockdown meant it hasnt been driven and when I came to fire it up not much happened....
I can hear a click (presumably the starter solenoid), when I put another battery pack onto to the existing battery and short the starter I manage to get it to start however its not a lasting solution or ideal for supermarket car parks.
The battery shows 12.84V after charging but once used to attempt to start (and failing) it drops to 9.4V .
Is this as simple as a new battery or should I be testing for something else as well ?
Any advice gratefully received.