Car engine will not start up?

This sounds like a fuel pump or the crankshaft angels sensor has gone out. When you turn the key to the on position without cranking the engine over can you hear the fuel pump run in the tank for 5 seconds?

https://www.2carpros.com/articles/car-cranks-but-wont-start

So the car was running before you did this and now it is not running? Is there more to this story or is this all of it?

If it was running and you only put 4 coils on it then we need to verify if we are getting spark. I would pull out one of the coils and plug and put the plug in the coil and then hold it against the block to see if it is sparking. If not then we can chase down this issue.

Lastly we need to check all fuses just to make sure we don't have any blown. Clearly replace any that are and we can go from there. Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is. Thanks

Okay. That helps. Thanks for that info. We need to start with checking for codes.

Your vehicle needs three things to get the engine to run. Spark at the right time, fuel, and compression.

If the check engine light was flashing that means there was a major issue with the engine and most likely doing damage to it or the exhaust due to a misfire. However, the codes will tell us better as to what is happening.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Due to finding the plugs black that means the engine was running very rich which will also explain the flashing check engine light.

Let's start with the codes and then crank the engine and pull a couple plugs and see if they smell like fuel. Next while you have the plug out, connect it back to the coil and hold it against the block while cranking the engine to ensure we have spark. Let me know these things and I am sure we can figure out what happened and how to fix it. Thanks