A starter makes a grinding noise. Which is the least likely cause?
a. A defective starter drive
b. Adefectiveflywheel
c. Incorrect distance between the starter pinion and the flywheel
d. Worn starter brushes
d. Worn starter brushes
Worn starter brushes could affect the operation of the starter but are not as likely to cause a grinding sound. Answer a (starter drive) is not correct because a defective drive or pinion gear on the drive could cause a grinding sound. Answer b (flywheel) is not correct because if the teeth are excessively worn or damaged, they can cause a grinding sound. Answer c (pinion to flywheel clearance) is not correct because if the clearance is not within specifications, a whine or grinding sound could be heard during cranking.
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