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If you unplug the new mass air flow sensor will the vehicle start?
Do you have a way to test fuel pressure?
When you turn the key on does the theft light blink fast?
The pats can still fail. If you swap the PCM power relay with a different one does the vehicle start?
If you unplug the fuel pressure regulator on the fuel rail. Is there gasoline present in the vacuum line?
Ok yours isn't equipped with a regulator. It's possible your injectors are leaking.
It's possible. I have seen it on a 2014 gas engine just recently. Is there a vacuum line at all connected to the fuel rail?
Correct you have a retur less fuel system. If the fuel damper is leaking into the vacuum system it will flood the engine. If you install new spark plugs the vehicle will start until it floods out again. You need to determine where the extra fuel is coming from in order to correct your concern.