We have a few different possibilities. First, fuel pressure drops off. If you have an injector leaking, it will allow fuel pressure to drop. Then, it takes an extended time for the pump to rebuild the pressure. That is the first thing I would check.
Try this. The first start of the day, do the following.
1) Turn the key from off to the run position (engine not running) and count to 5
2) Repeat step 1 three more times.
3) Next, try to start the vehicle to see if it starts quickly.
If it does, then it's a pressure issue. Or, you can check the pressure. Here is a link showing how it is done:
Another idea is if the engine coolant temperature (ECT) sensor is failing and not signaling the correct info to the computer. If the sensor indicates it's much warmer or colder than the actual temperatures, then the air/fuel mixture will be off causing a delay in starting or no start. You will need a live data scan tool to check the signal.
If you do have access to a live data scan tool, check the ECT signal before starting in the morning.
Let me know what you find or if you have other questions.
Take care and God Bless,
Monday, February 22nd, 2021 AT 5:59 PM