Codes are p0300, p0301, p0302, check engine light flashing, loss of power, and misfires when idling

Hello,

Cam and crank position sensors as well as oxygen sensors will not cause a misfire on just two cylinders on opposite banks. Cylinder one is on bank 1 and cylinder two is on bank 2. see image 1 below.

As you already have swapped coils and spark plugs this leaves us compression, injectors, or a possible air leak at the intake manifold.

Next, I would check if the injectors had the correct internal resistance.
Using a digital voltmeter set to ohms test the injectors for a resistance value of between 13.4-14.2 ohms at 20 degrees C/68 F.

How to use voltmeter:
https://www.2carpros.com/articles/how-to-use-a-voltmeter

How to test coils and injectors for your vehicle see good video below:
https://youtu.be/-oAeZfr4OxI

With a good diagnostic tool, you will be able to display the misfire counter, to prove that cylinders one and two are misfiring.

Hope this helps.

Cheers, Boris

I found a bad vacuum line will this cause my problem. Picture 3 what is this looks like a vacuum line?

Yes, a bad vacuum line can trigger loss of power and make the engine run rough.
So that should be the first item that needs to get fixed.
As for the third picture, it does not appear to be a vacuum line. Can you tell me exactly where it is located? Maybe take another picture from a different angle.
Also is there any fluid coming out of it?

It is next to the oil filter behind the exhaust manifold looks like a blow by tube there is a number 8. Couldn’t find it anywhere online and can only get a picture from the one side. Just curious what it does and thank you for the help, I am going to keep nickel and diming myself fuel filter and PCV valve maybe O2 sensor this week until I can get a compression gauge.

With the engine running, does it have any suction? or any fluid comes out of it?

It’s not running right now; I have a few things dismantled. here’s another picture of my mystery part.

This could be a pressure relief valve. That is what the little tube appears to be a drain.
The catalog does not show any location for that part.