Ok so*my*car*usually starts but now its not. When i start it it usually have to prime it and try starting it like three or four times before it stay on. It starts right up sometime and other times it will start then lose power then kill, and it will knock and smell of*gas**** it kills and after it cools and start again. Recently, it has been making a really loud grinding sound when its was being started before it stopped starting. Now when i turn the key all i get it a click and i hear gas getting pushed. Its just one click its not loud or anything. which makes me think its my starter amongst other things.I've replaced fuel pump,fuel filter, computer, alternator, distributor, and it had a tune up.