[healthservices]

After removing the engine cover so many times now it's not a big deal but wire a test light to the starter solenoid at the starter. When the problem happens see if the light lights when attempting to crank, if it lights and does not crank, it is your starter solenoid. Replace the starter assembly

Another thing you can do is to use a large punch and give the starter a good wack, if it starts your brushes are worn out and starter should be replaced or repaired