Fuel Pressure Regulator

[swinsoneric]

What is the purpose of the fuel pressure regulator? Where is the fuel pressure regulator located and how hard is it to change.. Thank U

[mikept03]

Originally Posted by swinsoneric

What is the purpose of the fuel pressure regulator? Where is the fuel pressure regulator located and how hard is it to change.. Thank U

Not to sound obvious but i assume it keeps the fuel pressure from becoming too great. It's located on the fuel rail on the driver's side. Chiltons says you need to remove the upper intake (the top part that says 3100 SFI...) but it looks like it would be easy to change without taking this off. Anyone know if the manifold does indeed have to be removed?

One test I have read about is that you can remove the vacuum line, and if you smell gas, the regulator is indeed bad.

[MT-2500]

What eng and trans and what year and mileage?
Just what it says it regulates the fuel pressure.
Why do you want to change it?
Have you checked your fuel pressure for up to specs?
MT-2500

[swinsoneric]

The reason i'm asking (MT-2500) is because i am losing alot of gas, i filled the car up on saturday night drove around a little, on sunday i didn't drive at all, monday drove the car some and today i have a half tank of gas. Please help because putting gas in the car is killing me :-(

[MT-2500]

If it is starting and running good it is not fuel pressure reg.
Check tune up end.
Watch for fuel leaks someplace.
Have you got a locking gas cap or large shotgun or big dog?
Mt

[swinsoneric]

I have a lock gas cap. I looked for leaks didn't find or see any. The car has power that's why i don't understand why i'm losing alot of gas.

[MT-2500]

What eng and year and mileage?
hat is your gas mileage? In town and on highway?
Sometimes the gas gauge will drop from full to 1/2 real fast. Fill it back up and see if it realy takes a half tank to fill it up.
Start checking your gas mileage real close.
After it has been parked overnight see if the gas gauge is the same as you parked as check the mileage on the odemeter.
Post back your gas mileage.
MT

[swinsoneric]

3.1 V6 and i have 146223 miles and as far as the mileage i'm not really sure but i think is something like 17 mpg. Thank you for the help. One more thing MT-2500, when i'm on a hill going up the gas gauge move down (about 3 lines) like i'm losing gas and when i'm going down the hill the gas gauge moves up (about 2 lines) making it seem like i have more gas than i do. Then when i get back on level ground the gas gauge goes back to normal.

[MT-2500]

OK start checking your gas mileage on a long trip then on short trips.
It is hard to tell on the gauges so fill it up and drive it and record mileage then refill it and check your mileage against galons it takes to fill it up.
MT

[swinsoneric]

o.k.i'm gonna try that, but from what i told you do you have any idea whats wrong ?

[MT-2500]

Not really.
Check engine tune up first thing if it is using more gas then it used to..
Check actual gas mileage.
Post back actual gas mileage.
What mileage did it used to get when you got it?
MT

[swinsoneric]

The tank was at 2 lines below the half mark, i filled the tank up and i put 7.51 gallons in there.

[MT-2500]

How many miles did it get since you last filled it up?
MT

[swinsoneric]

MT-2500.........I have a half tank of gas and its reading that i dove 65 miles, shouldn't i have more miles than that with a half tank of gas gone ?

[swinsoneric]

[MT-2500.........I have a half tank of gas and its reading that i dove 65 miles, shouldn't i have more miles than that with a half tank of gas gone ?