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Inspect your starter motor. If the starter solenoid is gummed up it won't engage properly. It was probably the cause of the initial fault and consequently damaged the ring gear and bendix, or excessive wear caused the bendix to fail. Swap the starter for a good serviceable unit or get yours rebuilt. Also check your ground leads for solid connections to your engine and chassis and your main battery terminal leads as well to ensure your starter motor is getting full current. If all of the transmission bolts are tight and the starter motor is bolted in properly that should eliminate the issue of poor starter gear alignment.
If you mean the starter grinds from time to time and won't crank the engine when it happens, the problem could be a bad spot on the flywheel and/or a faulty starter. The starter uses a magnet and bendix gear to push the starter gear into the flywheel. If the magnet or bendix is weak, the gear will not engage and can damage the teeth on the flywheel. You need to have the starter removed and check the flywheel teeth for damage.
Grinding noises can be generated by several things, a bad bendix (the drive component on the business end of a starter), a solenoid not fully engaging a bendix, a weak battery and finally a damaged ring gear or flex plate. Without specific info on the vehicle, these are the choices that come to mind.
The "Bendix" is the starter drive in the actual starter. When you crank the starter the bendix is driven forward into the flywheel. It sounds like the bendix spring is worn or week and it's not meshing with the flywheel. Instead it's grinding against it. If you're ambitious you can pull the starter, dismantle it and replace the bendix or option 2 replace entire starter w/new or rebuilt. Both will have new drive and save you a bunch of time.
try shimming the starter , it sounds like it is a tiny bit to close to the flywheel and is binding, causing a tinny or metal to metal sound.
dosent sound like it needs a very thick shim .probably no more
than a thousands or two. hope this helps
maybe you should weigh your options cause probably cheaper to replace that rebuild disconect bat before you remove starter take all wires loose remembering where they go dont mix up and remove 2 or 3 bolts that hold the starter in place then remove and replace in reverse order
That sounds more like a dead battery than anything else. The bendix, the bit that engages the starter to the flywheel, usually goes bad a bit more slowly and causes more dramatic persistent grinding. A bad starter is also possible, as are bad battery cables. The starter mortor and bendix are both replaced when you install a rebuilt starter. If a jump start doesn't solve the problem, and connecting a jumper cable directly from the + battery terminal to the starter motor doesn't help then replace the starter. If it does help, then the problem is probably the battery cables.
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