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fuel pressure regulators?
Posted: Sun Jun 12, 2011 7:35 pm
by comets
I think I might have a faulty FPR,
do I have to use a spec OE one ($60) - or can the universal ones be used ($30)?
Re: fuel pressure regulators?
Posted: Mon Jun 13, 2011 5:16 pm
by Legacy777
FPR's are the same between the non-turbo & turbo cars, and you should be able to pick a used one up at a junkyard or in the parts shed for next to nothing.
May ask what you tested which leads you believe you have a faulty FPR? They rarely if ever go bad.
Re: fuel pressure regulators?
Posted: Tue Jun 14, 2011 12:55 am
by comets
Hi,
I have terrible gas mileage, and I figure if the price is cheap, and the work is easy, I might give it a shot!
How do I exactly replace the FPR? Is it attached to the Fuel Rails?
Re: fuel pressure regulators?
Posted: Wed Jun 15, 2011 5:53 pm
by Legacy777
There are two screws that hold it to the fuel rail. You would need to remove those, and then loosen the clamp holding the hose on.
Honestly, I don't think your problem is the FPR.
When's the last time you've replace the spark plug, wires, and done a general tune up on the engine?
What year and model Legacy do you have? Is it turbo or non-turbo, wagon or sedan, and automatic or manual transmission?
What kind of fuel mileage are you seeing?
Re: fuel pressure regulators?
Posted: Thu Jun 16, 2011 1:03 am
by comets
I've posted a seperate thread, here.
http://bbs.legacycentral.org/viewtopic.php?f=5&t=47243
I am changing the fore mentioned items,
And replacing the FPR doesn't hurt.
PS: When removing the FPR, will fuel spit out?
Re: fuel pressure regulators?
Posted: Thu Jun 16, 2011 3:38 am
by 93forestpearl
I wouldn't waste my time and money on a FPR.
An O2 sensor can get funky and affect mileage without throwing a code.
Re: fuel pressure regulators?
Posted: Thu Jun 16, 2011 5:15 pm
by Legacy777
Yes fuel will spit out as the fuel system is typically under a little pressure even when the engine is off. You can disconnect the fuel pump connector under the rear seat while the car is idling and that will help draw down the pressure in the system. Even with doing that, fuel will still likely dribble out due to it's location.
I too would suggest not bothering with the FPR. It's not something that fails and not something that is going to cause poor mileage.