hard to start

Hello,

Yes this is a common problem with cars, here is a guide that will help you get started.

https://www.2carpros.com/articles/engine-cranks-excessively-before-starting

Please let us know what you find.

Cheers, Ken

this car always hit on about 3 turns had had it check at auto zone it say oxy.sensor changed it but always started on 3 or 4 turns it just stop starting

A couple of things come to mind that I need you to check which can cause the o2 sensor codes as well. The first is a vacuum leak, here is a guide to check for that.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

and a weak fuel pump.

Here is a guide for that as well

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Please run some tests and get back to us so we can continue helping you.

Cheers, Ken