I have one for you Ranger:
On my 1991 Seville, I have an aftermarket FPR from Aeromotive that is also a boost-referenced regulator (no boost yet

). It is set at 2 PSI above stock ratings. As of late, I have been having some serious cold-start issues to where I have to either crank the engine for several seconds or turn the key off and on enough to build fuel pressure...
I immediately checked the fuel pressure regulator at the vaccum port for leaks, to which I found none. The next thing I tested was the fuel pressure: upon initially turning the key, the fuel pump arms and the fuel pressure rises to where it should be, then it drops to near zero...As mentioned before, I have to turn the key several times again without actually starting the car to get the fuel pressure to stay constant and I also do that so I don't fry the starter (just replaced a bad one today).
Any thoughts on this man?