Car not taking all gas when pedal push down?

Hi,

By chance, is the check engine light staying on or flashing? Based on the description, it should be. If so, you should scan the computer to see what codes are stored. Most parts stores will do it free of charge.

Next, if you find there is a random misfire, confirm the fuel pressure is within specification. If the pump is weak, it won't keep up with the demand.

Here is a link that explains how to test pressure:

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

If you look below, I have attached the manufacturer's fuel pressure specifications. You will need a fuel pressure gauge, but most parts stores will lend one to you.

Let us know if this helps or if you have other questions.

Take care,

Joe