There are a number of things that can cause this, but the most likely thing would be a fuel issue.
Here are a couple guides that will get us started:
https://youtu.be/dCjmRL3p4Cs
We need to check the fuel pressure so this will help with that:
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Once we know what the fuel pressure is, we will have a better idea as to what the issue is. However, pumping the gas pedal on this vehicle is not going to do anything as you are just opening the throttle and plate which will allow more air in but the throttle body will control this on its own. So you don't need to pump the accelerator to help with starting the vehicle.
If you hold the accelerator down and the engine starts then we have too much fuel as this is called a clear flood start which cuts the injectors but I doubt this is what is happening.
I think you have an issue with not enough fuel, so let's check the pressure and go from there.
Thanks
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Saturday, September 25th, 2021 AT 8:22 PM