Hey, a few days ago my 92' 318i didnt start. But after two tries it did successfully. Now 3 days later its got progressively worse and it wont start at all. When I turn the key I hear a single click from the engine, and the engine does not turn over. The gas tank is full. All the electronics turn on and work. Ive searched on the forums, but everyones situation seems to have different factors for their car not starting. What should I check first? What could it be?

have your battery tested... if you were to jump it does it start then?

Battery?

Is your fuel pump noisy?

I dont think its my battery, cause a jump doesnt help. Im thinking its my starter motor. But thats just a guess