89 bronco 2 2.9L Stater problems

i have a 89 bronco 2 2.9L, It runs good once its running but getting it to run is the problem, When you turn the key all you hear is the starter spining or it trying to start but just can get its teeth in or something, I end up having to push ti to start, Ive replaced the start two times and still the same problem it works for about 2 days and its back, I got it from my uncle and he said that i had to push the starter over so it can hit the flywheel, That starter is on good you cant move it at all, Please help

If you've chewed up some starters, you may have to replace the flywheel. Check your electricals going to the starter, make sure you have good, solid wiring. (You may be putting too much amperage into the starter, which can cause it to overheat and burn out ) Does the thing start easily, or does the starter have to work for it? In that case, you might have to replace the starter, flywheel, and fix what's holding up the process.

none of the starters ive replaced have been chewed up at all they just spin, When it works it start easy, after 2 days it just spin or it sounds like its chewing it