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Topic: Fuel Injector Pressure Regulator (Read 1314 times) previous topic - next topic

Fuel Injector Pressure Regulator

i need help finding out if my Fuel Injector Pressure Regulator is going bad? could any one give some things that could happen when its going bad?
[SIGPIC][/SIGPIC]
88 5.0L aod with duel flowmaster and speedo mod
88 5.0L H.O with 5 speed R.I.P
87 3.8L no trans. geting h.o and 5speed (project never ending thunder) started it as of 8-14-10
96 bronco xl 5.0L 5 speed man4x4
:birdsmily:

Fuel Injector Pressure Regulator

Reply #1
Gas comes out of the vac nipple.  Go to an AZ and borrow a Fuel pressure test set.  A more common problem is the plastic line in the tank failing.

What is it doing?
My car is a gravity hybrid.  The gasoline engine gets me up the hills, and gravity gets me down.

Fuel Injector Pressure Regulator

Reply #2
Rough idle, missing, strong gasoline smell at the engine, and a feeling of running rich.

At least, this is what happened to my truck, and I replaced the regulator, solved the problem. Good luck!
'98 Explorer 5.0
'20 Malibu (I know, Chevy, but, 35MPG. Let's go brandon, eh)

Fuel Injector Pressure Regulator

Reply #3
rough idle sometimes and when i turn a corner and get on the gas it seams like it going to stall but it dose not. after like 3sec then it just picks up and go like nothing wrong
[SIGPIC][/SIGPIC]
88 5.0L aod with duel flowmaster and speedo mod
88 5.0L H.O with 5 speed R.I.P
87 3.8L no trans. geting h.o and 5speed (project never ending thunder) started it as of 8-14-10
96 bronco xl 5.0L 5 speed man4x4
:birdsmily:

Fuel Injector Pressure Regulator

Reply #4
Gas in the vacuum line.
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +

Fuel Injector Pressure Regulator

Reply #5
I had the same problem.My fuel tank baffle inside the tank came apart from the tank itself and caused me grief.I replaced the tank.....good to go.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Fuel Injector Pressure Regulator

Reply #6
Quote from: hellsing73;300818
rough idle sometimes and when i turn a corner and get on the gas it seams like it going to stall but it dose not. after like 3sec then it just picks up and go like nothing wrong

Ain't the regulator, it don't know right from left... As mentioned sounds like the problem is in the tank, BUT most seem to have at least a little of this problem if there is less than a 1/3 tank of gas... Mine does and the baffles are OK..

Fuel Injector Pressure Regulator

Reply #7
its got a new tank on it i know about the bafful thing and i have the tank out a few months back to put a new filter on the pump to stop it and it did for a bit than it started doing it again and it dose it when i try to leave a redlight sometimes.
[SIGPIC][/SIGPIC]
88 5.0L aod with duel flowmaster and speedo mod
88 5.0L H.O with 5 speed R.I.P
87 3.8L no trans. geting h.o and 5speed (project never ending thunder) started it as of 8-14-10
96 bronco xl 5.0L 5 speed man4x4
:birdsmily:

Fuel Injector Pressure Regulator

Reply #8
its hard for me to say whats its doing. its done a lot of thing out of the norm lately
[SIGPIC][/SIGPIC]
88 5.0L aod with duel flowmaster and speedo mod
88 5.0L H.O with 5 speed R.I.P
87 3.8L no trans. geting h.o and 5speed (project never ending thunder) started it as of 8-14-10
96 bronco xl 5.0L 5 speed man4x4
:birdsmily:

Fuel Injector Pressure Regulator

Reply #9
Also if your FPR is going south you will have gasoline in the crankcase.  Look for an overfull oil level with a strong smell of gas.
41 Dodge Luxury Liner Sedan
78 F-100 2wd flareside
84Turbo Coupe
84 Thunderbird Élan
85 Thunderbird 3.8
88 Turbo Coupe
88 Mustang GT
90 Stang LX 5.0 5spd
93 F-150 4x4 ext cab
96 Mustang GT
98 Mustang GT
99 SVT Cobra
06 Fusion SEL
14 Fusion Sport

Fuel Injector Pressure Regulator

Reply #10
Quote from: jandmmustangs;301115
Also if your FPR is going south you will have gasoline in the crankcase.  Look for an overfull oil level with a strong smell of gas.

Not necessary, I've seen one that was apparently clogged/locked and would not bypass but never leaked... With a good fuel pump, system had over 100psi(started out trouble shooting a weak fuel pressure problem)...

 

Fuel Injector Pressure Regulator

Reply #11
Ive never had one go south on the lean side.  Guess ive just been lucky.
41 Dodge Luxury Liner Sedan
78 F-100 2wd flareside
84Turbo Coupe
84 Thunderbird Élan
85 Thunderbird 3.8
88 Turbo Coupe
88 Mustang GT
90 Stang LX 5.0 5spd
93 F-150 4x4 ext cab
96 Mustang GT
98 Mustang GT
99 SVT Cobra
06 Fusion SEL
14 Fusion Sport

Fuel Injector Pressure Regulator

Reply #12
well i got to test it the other day and its at about 32psi
[SIGPIC][/SIGPIC]
88 5.0L aod with duel flowmaster and speedo mod
88 5.0L H.O with 5 speed R.I.P
87 3.8L no trans. geting h.o and 5speed (project never ending thunder) started it as of 8-14-10
96 bronco xl 5.0L 5 speed man4x4
:birdsmily:

Fuel Injector Pressure Regulator

Reply #13
with or without the vacuum line on?
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com

Fuel Injector Pressure Regulator

Reply #14
with the vac line on
[SIGPIC][/SIGPIC]
88 5.0L aod with duel flowmaster and speedo mod
88 5.0L H.O with 5 speed R.I.P
87 3.8L no trans. geting h.o and 5speed (project never ending thunder) started it as of 8-14-10
96 bronco xl 5.0L 5 speed man4x4
:birdsmily: