Car has a hard start. All stock. Not sure where to start. Been doing it since i bought it so I thought it was from the low compression. Cranks 3-4 times before starting. Went to start it earlier and after about 4 cranks it just stopped cranking but started right away next try. Ideas?

 

With hard starts, it generally boils down to fuel, air and spark. Check / replace air filter, spark plugs, maybe check fuel pump/injectors as well.

 

I replaced plugs shortly after buying it and just replaced the filter. How would I go about checking injectors