Why won't new starter on 1985 Chevrolet 454 motorhome ngine engage?
Starters are made specifically for certain engine and
transmission combinations. The snout of the starter must be the
correct length for the worm gear to engage the ring gear. If you
have the wrong starter, the worm gear will not engage properly. If
the ring gear is damaged, the starter might be operating properly,
but have no teeth to engage. If the solenoid is not working, the
starter motor will spin, but the worm gear will not be pushed
forward to engage the ring gear. Remove the starter, and visually
check the ring gear for missing teeth. If the ring gear appears to
be intact, take the starter back to the place where it was
purchased and have it tested. If the starter tests good, check the
solenoid wiring on the vehicle to insure that the solenoid is being
energized. If all of these steps fail to identify the problem,
return the starter and get a different starter out of stock and
compare them. You might have a mislabeled starter.