Troubleshooting an Isuzu engine that won’t turn

1 ,Starter does not run

a Insufficient battery charge          Recharging or replacing the battery

b Defective battery relay              Defective battery relay

c  Defective wiring                  Connect or repair

d  Defective starter unit        Defective starter unit

 

2, Defective starter unit

a  Wear of the ring gear    Repair or replacement

b  Repair or replacement   Improper adjustment of the starter magnetic switch  Adjustment or repair

3 ,Adjustment or repair

a Insufficient battery charge    Recharging or replacing the battery

b,Insufficient tightening of the wiring circuit terminal      Repair

c,  Defective starter unit    Inspect the starter.If defective,replace it

d ,Seizure inside the engine    Disassemble and repair