Starting issue, it takes 2 or 3 tries until it starts?

This sounds like a classic fuel pump problem, but to be sure we can do a fuel pump pressure test.

Here is a generic guide to help you step by step with instructions in the diagrams below to show you how on your car:

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

and

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

Standard Value: .................... 375 - 385 kpa (3.82 - 3.92 kgf/sq.cm, 54.3 - 55.8 psi)

You can rent a fuel pressure gauge set from the auto parts store. Here is how to change the pump out in case you need it. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

Already i changed the fuel pump 3 days ago. But still the same problem.
I believe you are talking about the fuel pump only... Not the sub fuel... Yes?
I uploaded 2 videos with my question.... I will upload it again now for you.

Thanks for the videos. This can be a dirty throttle body or a vacuum leak.

here are two guides you can go over to help us fix it:

https://www.2carpros.com/articles/throttle-actuator-service

And use this guide when the engine is cold only:

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

Check out the images (below). Please let us know what happens.

Yes, this is it. Thank you so much. It is a vacuum problem. I closed the valve on the vacuum line and both issues been solved.

The knocking issue showed up again today. Starting no problem any more.. What do you think?

Good job on finding the vacuum leak. Can you get a video of the noise from under the hood please?

I didn't find the vacuum leak. I just closed the vacuum line and the starting issue been solved. But the RPM instability still exists. I believe it may be the purge control solenoid. What do you think?

"Yes, this is it. Thank you so much. It is a vacuum problem. I closed the valve on the vacuum line and both issues been solved." Sorry I was confused. Yes, it could be the EVAP purge valve causing the issue. I would remove it to see if you can blow through it, if so, the valve is bad here is the location of the valve near the throttle body. Check out the images (below). Please let us know what happens.

Yes. The old purge valve was defective and i could blow through it. I changed it already and so far, so good. Hope this will solve that issue for good. If any other issue comes to the surface i will update you. Thank you so much for your help.

Thanks for letting us know, we are here to help, please use 2CarPros anytime.

Appreciate your help... Thank you

Hi Ken, if you remember that knocking back again to my car...sudden knocking or play in the RPM during idling only. Last time i had that issue and starting problem and i changed the Purge vapor control valve and the starting problem has been solved since then. now only that RPM playing (knocking) issue.

Sorry, we only handle one problem per thread, please post your new question here, you must be logged in.

https://www.2carpros.com/questions/new

Cheers, Ken