cx7 cranks but doesn’t start

So I'm new here and honestly kinda new to the mechanic life but I know a little more than someone with no knowledge at all. So I have a 2007 Mazda cx-7 Grand touring 2.3L and I got around amazingly for the last year, did my routine oil and maintenance, started having issues and long story short...

Hi, I bought a 2008 Mazda CX-7 from an auction place, the car cranks but does not start, I replaced the four spark plugs and it still won’t start. I plugged in an obd reader and scanned it for codes and no codes was coming up. Can someone please advise me on what the issue is? I checked the...