So I've started hearing some squealing from the engine bay maybe about a month ago, figured one of the pulleys were loose, check it out later, whatever.
a week later I started hearing a scraping sound, figured it was the brakes or something thinning, but I was super busy, put it on the to do list..
a week after that I realize the scraping is coming from the engine bay, and the sound is really loud at startup but dies down as I drive.
It wasn't until I was pulling into my drive way one night that I hear a loud metal on metal griding noise, is when I park it for a few days.
Yesterday I call my mechanic buddy (i use the term mechanic loosely here) over to check out the sound, go to start the car, and it doesn't start. Battery is ok (jump started as well), and added some gas to rule that out.
We look under the car from the passenger wheel well, and see that the rim of the compressor is scraped up, and it seems to be off center.
so before I go out and buy a new compressor, my question is:
a) would a bad compressor prevent my engine from turning over?
b) what would cause the metal scraping around the rim of the compressor?
I have a feeling the starter might've gone out, but I'm really not good with diagnosing problems. Any help would be appreciated.
Also possibly related problem: lately my tank has been stopping after about 10$ worth of gas being pumped, coming from an empty tank. I've read something about the air not being able to escape and I feel like it may have to do with the loose gas cap that I've now replaced. What do I have to do to "get the air out?"