The starter is probably not aligned with the flywheel. The clearance between the starter and the ring gear needs to be checked.
bad starter or bad connection to starter or bad ground on battery or starter
First check for loose mounting bolts at starter. If everything is OK, then remove starter and check for broken teeth on starter pinion gear and flywheel.
The starter relay or the internal starter relay solenoid contact is closed either by 12 volts still applied to the relay or starter or the contacts have welded themselves together. Welded together sounds good if the starter is shorted and that would cause the cables to overheat also.
if you just put a starter on you shouldn't have any problems cause i just had the same thing happen to me i thought it was my battery so i brought a new one and it still would not start so then i had a new starter put on and i have no more problems except i have to get the codes for my radio to start back to working and the dealership want at least 50 dollars and up i hope this answer your question
A starter will not disengage if the ignition switch is stuck or if the solenoid has jammed. This will cause the starter to constantly receive power.
If it is the starter that is grinding, the bushings are worn and the starter is "dragging" and not spinning fast enough to get the engine started. Replace the starter, chances are that the armature is damaged due to the dragging (grinding against the inside wall of the starter.
The starter could grind if the bendix is sticking
No, I would seek another answer to the problem. If the starter starts while the car is running, it may grind the bendix or the starter into a toothless nub and the starter will quit functioning alltogether.
your clutch may not be fully engaging
why would my starter wire burn, going from starter to battery
No. A bad starter would cause the car not to start.
Wrong starter, wrong fly-wheel, Bad starter drive, worn fly-wheel. Starter may need to be shimed.
I would suspect you it was installed incorrectly, it is a bad starter, or the flywheel is broken or has a missing tooth.
You need to replace the starter.
syncro??
The starter itself.. that would be unlikely... but a wire connected to the starter could on some vehicles.
The starter relay (solenoid) points are melted together.