After reviewing all this info, I am pretty confident that the issue is fuel related. We just need to limit down the possible causes. The regulator could definitely be the issue and needs to be tested. I attached the process to replace and disassemble the regulator but more importantly is the testing of the fuel system.
We need to completely run through this test and identify the issue in the fuel system. I would highly suggest this is done prior to removing the intake manifold to replace the regulator.
As stated you should have above 60 PSI when you turn the key on and if you don't then that confirms it is a pressure issue then it is a matter of identifying the cause. Don't get caught in the trap of having replaced the pump or any other part in the recent past. Unfortunately we get faulty parts out of the box. We have all been burned by that so if it has been a few years, it could have definitely failed.
I think it is clear that you and others suspect this is a fuel issue so the only way to track this down is run through this material. Please report back and we can go from there. Thanks
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Tuesday, May 26th, 2020 AT 11:45 AM