I suspect you are exactly correct. So, let's try and prove that by running through these guides.
Let's start with checking the fuel pressure not only when the engine is running a little rough but then shut the engine off and keep watching the pressure.
Then we need to see what the pressure is when you are trying to restart it.
Here is a guide that will show how to do this:
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
What I suspect is happening is the pressure is bleeding off and flooding the engine so you can try and hold the accelerator wide open when the engine is not restarting, and this will cut the injectors. This is called a clear flood start. If the injectors are leaking, then this may not work but it would be a good test to try.
If this checks out there here is a guide that will get us further with this issue:
https://www.2carpros.com/articles/engine-cranks-excessively-before-starting
However, I suspect we are going to find our issue with the injectors so let's start with this and go from there.
Thanks
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Saturday, February 12th, 2022 AT 6:47 PM