Help starter problem

[Tatchest]

I have isuzu 4BE1 eagle mini dump truck.. my problem is yung starter ko ayaw mag start is just like a metal cranking inside the starter... Ive change vendix drive kasi bungi bungi as per mechanic said... I also buy 2 new battery kasi luma na yung 2 battery ko... When we push naman yung truck start naman sya... But when i turn off the engine and start it again ayaw na naman mag start. Yung sound ng starter parang gears na dumudulas parang ayaw mag engage.. But may times naman nag start sya... Pero madalas 10 or 20 times ko start bago pa mag start or minsan ayaw pa mag start need pa mag push para mag start lang... ADVICE naman po dyan mga sir kung ano dapat gawin..... Thanks

[jaypee10]

solenoid..ba tawag dun un ung tumutulak para kumagat ung gear sa flywheel..

..yan pa check mo..