Fuel Rail Pressure Relief Valve leaking, how do I fix it?

It should be like a tire valve core and changed with the same tool. You can get a valve core tool from amazon. Check out this link:

https://amzn.to/403oX0e

Please let us know if you need anything else to get the problem fixed.

Would I be able to use a regular tire valve core? Or does it have to be a specific part? On Rockauto there is a part called Fuel Pressure Relief Valve for around $20.00 but it looks exactly like a tire valve core. But I read somewhere that the seal on the tire valve core does not withstand fuel as well as the specific part, so it would fail rather quickly and start leaking again.

That is correct, it needs to be for the fuel rail, I believe the local auto parts store have them.