Re: Starter Help
Yes, but first I ask, are you using the two knurled GM starter bolts? And they are straight? This is must as well as the front brace attached between the starter stud and a bolt to the side of the engine block. This will save the starter nose from breaking later in life and keep the starter motor in alignment. Yes, I've had to shim one starter adding 3/16 thick shim, 3/8 inch flat washers, on the outside bolt between the starter nose and block.
You're best method of troubleshooting is remove the starter, remove the solenoid - you may be able to remove the solenoid with the starter in place - remove the dust cover of the bellhousing, and manually engage the starter drive with your hand, and view the the drive engagement into the ring gear. A small paper clip spread open and insert the wire into the top of the drive pinion tooth and valley of the ring gear teeth, one pinion tooth engaged between two ring gear teeth, for the correct clearance - not tight or loose, a nice 'slide' of the wire into the junction. Set the shim thickness accordingly.
Reinstall solenoid and test. You don't want the drive pinion too close as to stay engaged after the engine starts or starter stays engaged - then remove battery clamp to stop re-evaluate and if engine does start, turn off ignition.
Or you may just be better by getting another starter motor and try it. If the new motor does work, transfer the starter nose to the next starter as the nose locates the drive to the ring gear.
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