Bad starter?? Do not really know

[kenuwine4g63]

Ok guys i've been at this car for about 4-5 months. My starter does this-When i put my battery in(bad cell, but had it charged just to start the car, And no, with a good battery it didnt change anything) and started to start the car. It started turning over real slow then it'll start turning over faster but wont Start. The car just cranks over and over. when i try again the starter would just click. Now with that being said, when i test the voltage on my battery when the car turns over its reading 11.5v. When i test it when the starter just clicks it test out at 12.2v. I finally got it to back fire today and then it just cranked over and over. But i dont think that its turning over fast enough. I can hear it putting out the exhaust and thats it. Need help!! Thanks guys

 

[kenuwine4g63]

Ok..i changed spark plugs and nothing. However, my new spark plugs are all wet too, all except cyl#3. So im fouling out on 4,2,1. How would i be able to tell if my FPR is bad. It is a stock FPR. Also im going to change out my spark plug wires.