FiveOhhEatr

Where is the fuel pressure regulator. What needs to be done to replace it? Is there anything i need to remove or undo before? Thanks!

3rdgen92maro

iTrader: (20)

Its on the back of the intake manifold.

FiveOhhEatr

Is it pretty hard to get to?? Whats the best way to do it?

RamAir95TA

iTrader: (2)

Best way to access it is to remove the fuel rail. There are four bolts holding down the fuel rail (directly on top). You'll pop the rail out with the injectors still attached. Depending on what you're looking to do, you may or may not need to remove the fuel lines. If you do, you need a disconnect tool (3/8" and 5/16").

What makes you think you need to replace it?

FiveOhhEatr

It might be bad... It might be why my car isnt starting right

RamAir95TA

iTrader: (2)

So because it "might" be bad, you're going to replace it? There ARE diagnostic steps to determine a hard-start condition. Why not tell us what's going on?

FiveOhhEatr

ok well on cold starts it take between 5-10 seconds to start... Once running i shut it off after about 15 minutes of being off it takes a while to start. I replaced the fuel filter and was told it might be the regulator.

RamAir95TA

iTrader: (2)

Sounds more like the fuel pump than the regulator. 70% of hard start conditions are caused by a weak fuel pump. Have you picked up a fuel pressure test gauge to check fuel pressure?

Remove the vacuum line off of the fuel pressure regulator. If fuel comes out, then the regulator is bad.

FiveOhhEatr

yes fuel was coming out when i last checked

RamAir95TA

iTrader: (2)

Confused.

Less than 50 minutes ago, you didn't know where the fuel pressure regulator was, but now you say you removed the vacuum line off of it and fuel came out? Did you just do this within the last few minutes?

FiveOhhEatr

yes im in my garage right now haha

RamAir95TA

iTrader: (2)

If you are certain that fuel is coming out of the back of the fuel pressure regulator (http://shbox.com/1/fp_reg.jpg labeled "vacuum control hose"), with the pump priming or engine running, then the regulator is faulty. You may still want to pick up a fuel pressure test gauge just to have.

FiveOhhEatr

I did when it was priming ill check wen its running

myltwon

iTrader: (1)

pretty much if you have a fuel odor or fuel in the vacuum line the diaphragm inside is cracked and your fpr is constantly simulating WOT fuel pressure. best way to check of course is to hook up a fp gauge like ramair said.