Quick and Simple ?

[phil_long]

To answer your question, yes, the car idles better and smoothly when fuel pressure is raised.

[Steve Wood]

and what is the vacuum with it raised?

[phil_long]

Similar to other thread because the car cuts out. Since ive adjusted the FP, the car isnt drivable as it tends to want to die if i dont give it gas.

Also, my inexperience is about to show as I ask about checking the EGR and PCV. From the diagrams ive seen, the egr is the round thing on the driver side sitting between the injectors with the vacuum hose ran to it? I can take a pic of what i think is the Egr and u can confirm. Unsure about the PCV as well. Sorry.

[phil_long]

and what is the vacuum with it raised?

Let me check

[phil_long]

Alright, idk if this is going to help, but im going for it: raised the FP to 48 line off, and the car stop cutting out under throttle in park.  The IAC DID NOT remain between 10-30.  It actually hovered from 10 on down to 3, and sometimes would jump up to 10-13,but not for long.  During the time it was above the 10, the vacuum held steady at about 17-18. 
 
Off topic, is there a vacuum hose running all the way to the back of fuel pump(or tank in general)?  Might sound weird (which isn't that abnormal for me), but behind the whining noise that the fuel pump make, I heard the sound of a vacuum leak from the rear of the car.  I could be reaching, but whenever I hit the throttle, that vacuum leak sound went away and the fuel pump whined at a higher pitch.  I know I could be reaching, but I want to be sure I share everything.    

[phil_long]

And, when i put the car in drive, the IAC raised to 30 and held

[phil_long]

now the car about to piss me off.  I went back out there just to start it up and move it, and what do you know, the damn IAC count is at 70 out of no where.  im trying my best to patient, but geesh, why wont the car just work!!  or not work in an easy way so i can fix it.  I do appreicate all of your help and i never feel like thank you is enough. 

[Steve Wood]

First thing you need to do is to take a deep breath and calm down!   It takes calmness to keep from messing things up further.

When the car is cold, the iac will be a higher number and it will come down as it warms up and should be pretty steady after a bit of running.  We always check it in Park...it stands for Idle Air Control so whatever reads when it is not idling does not mean anything.

Now that you have raised the fuel pressure, what are the blms at idle?  It sure sounds like your fuel gauge is not reading correctly.  When you rev it up, does it run more smoothly now?

Second picture down on this page  http://www.vortexbuicks-etc.com/sensorcomponent_locations.htm  see the last vacuum hose on the back of the vacuum block that is larger and that is curling down to the intake manifold?  In the end of that hose is the pcv valve and it is plugged straight down into the top of the intake manifold.

The egr is on the drivers side of the intake and is covered by a round plastic cover...has a single vacuum hose going to it.  Pop the plastic cover off and you take both hands, put your fingers under the valve and feel upward for the diaphram...you should be able to lift up against some spring pressure and lift the egr plunger up...when you let it go, the spring should pop it back down.

There is no vacuum line to the back of the car.  There are three lines that run to the gas tank.  Fuel line to the fuel rail on the passenger side, a return line from the bottom of the regulator, and a vent line from the charcoal cannister that removes gas vapor from the fuel tank vent.  You might try taking the cap off the gas tank and see if the noise goes away

[phil_long]

I will keep u posted.

[Steve Wood]

here is what I want you to do after you have checked things out.

With the fuel pressure regulator hose still connected, adjust the fuel pressure upward until the blms on a warm idling engine are down to at least 135.  Then, go drive the car and watch the blms at cruise at 70 mph...steady cruise.  See what the blms read at that point.  Hopefully, they will be somewhere close to right.

[phil_long]

I can do that. And, the vacuum is holding steady at 18 after car is warmed up and FP raised to 48 line off. 

[Steve Wood]

which is what it should do...car is definitely starving for fuel at the lower pressure...so the question is, "Why?"

Bad gauge, or maybe bad injectors that are plugged up?  If adjusting pressure by watching the blms as i suggest above tends to work at both idle and cruise, then I am going to guess-gauge.  But, I am sure there is a saying about "guessing" 

Having a suspect fuel pump is not helping any, either

[phil_long]

Ok. Today i plan on checking the EGR. All the hoses are tight. As far as checking the PCV, what exactly am i doing to make sure its not plugged up? Jus observe it?

[phil_long]

And these things i plan to do today.

[Steve Wood]

Pull it out and make sure it rattles when you shake it.  Won't hurt to spray some carb cleaner in it to clean the varnish out.  I suspect it is okay now that the vacuum has come back with more fuel.