hello I just been and got in my car not used it since this morning it cranks but it took time to start engine cranks then k=like before eventually fires. I have read the stater motor stuff will try that in bit see what I find thank you

Is this a fuel injected car or a carburated car? Do you have a manual fuel pump or an electric one? Heck, It could just be the fact that your fuel system doesn't keep long term pressure. Get a new gas cap

There are thousands of mechanics and car owners out there with possible help but you left out serious information needed for them to provide decent help.

RE: mfg, model and year, engine size, auto transmission ? Help out a little with more information.