three yr ago I bought a s10 blazer, haven't had one day when I turn the key and it didnt starts right up. yesterday I was pulling into a parking lot and it just died and hasn't started since.....changed the fuel filter, fuses,coil, it gets spark , gas. what could be wrong

 

Two articles you need to check out below. Also, you need to post more info or a lot of people won't respond. The basics..year, make, model, engine type and your eighth digit of your VIN code ("W" or "X"). Take a look at my signature block. Contains more than you need to post, but pretty much any question on any problem I have the folks on here can know needed details about my truck to help me troubleshoot.

https://blazerforum.com/forum/engine...not-run-45944/

https://blazerforum.com/forum/2nd-ge...eakdown-88305/

 

There are several things that may cause the problem you have. If it were me I would start with the basics, what kind of fuel pressure do you have? Do you still have the cat on it is it plugged? Also check the timing did it jump? those are some basics that will help I hope, Good luck