Question about Cars & Trucks

2 Answers

Get tested fuel pressure regulator how do you know its leaking inside the intake without opening the intake manifold

Posted by on

  • Shannon Smith May 01, 2015

    that's what I thought Firestone said its in the intake manifold without looking in the intake manifold and they want to replace the whole fuel injector spider assembly

×

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Cars & Trucks Master
  • 991 Answers

Fuel from the pressure regulator can't enter the intake manifold with out passing through the injector first. That means that if you have a leak in the inlet manifold you have a leaking injector.
A fuel pressure regulator is no more than a controlled leak. You test pressure on the fuel rail, if you have pressure you have fuel to the injectors.
The regulator controls that pressure by controlling the return flow to the fuel tank. You are in trouble when a pressure regulator does not flow (leak) fuel from the pressure (fuel rail) and return ports.
To test weather a injector is leaking you remove it from the inlet manifold and pressurize the injector.

Posted on May 02, 2015

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Cars & Trucks Master
  • 43,127 Answers

You don't of course

Posted on May 01, 2015

5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 212 Answers

SOURCE: leaking fuel pressure regulator

Release fuel pressure by removing fuel pump relay and turning engine over to release pressure. Place a rag to catch any fuel under regulator Fuel pressure regulator has a locking clip pry clip off remove vacuum line pull regulator out with twisting motion,replace fuel pressure regulator install clip connect vacuum line install relay. Check for leaks,your done.

Posted on Feb 23, 2010

  • 25 Answers

SOURCE: Intake manifold -rt side-leaking outside

Sounds like you need a intake manifold gasket replaced it will cost you a couple hundred to have someone do it for you but if you have mechanical ability you can do it yourself if the coolant is in the oil you will want to get it done very soon because the coolant will wash the bearings in the lower end then costing you alot more. any other questions just ask.

Posted on Aug 13, 2008

  • 341 Answers

SOURCE: coolant leak

You may want to check it with an ultraviolet dye and light kit.You can get a kit from a good auto parts store and do it yourself. They have dyes for every kind of fluid a car has. A very handy tool and not very expensive either.

Posted on Nov 26, 2008

dustyboner
  • 331 Answers

SOURCE: Can't find Fuel pressure regulator on 2000 Jimm

you need to remove the upper intake manifold to get to the FPR

Posted on Dec 14, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

97 tahoe 5.7 .motor shutafter couple mins starts. fuel pump replaced. dont hear it pumping but then motor starts. I had some one tell me it was acrankshaft sensor whats up


Don't go by what someone said ! Testing the affected system is the only way to trouble shoot a problem like this . When it dies and won't start you need to find out what is missing , spark or fuel ! Pull the coil wire off the Distributor cap and hold near ground (metal on the engine ) Have someone turn the engine over , turn the key to start position. Is there spark ? If yes , it's not the crank sensor . Test the fuel pump relay electrical circuit . put a fuel pressure gauge on the fuel rail . The fuel injectors on these are known problem childs . CPI - center port fuel ijection . They are located under the intake manifold along with fuel pressure regulator . The regulators are known to leak fuel inside the intake manifold . Cause hard start problems . How to identify and repair leaking fuel pressure regulator GM CPI system...

Dec 29, 2016 | Chevrolet Tahoe Cars & Trucks

1 Answer

P0171 AND P0174B WHAT DOES IT MEAN?


Trouble Code: P0171

Fuel Trim System Lean (Bank 1)

Possible Causes:


Air leaks in intake manifold, exhaust pipes or exhaust manifold.Fuel control sensor is out of calibration (ECT, IAT or MAF.)Low fuel pressure (fuel filter clogged, pressure regulator failure).One or more injectors restricted or pressure regulator has failed.HO2S element is contaminated, deteriorated or has failed.Vacuum hose is disconnected, broken, leaking or loose.Trouble Code: P0174

Fuel Trim System Lean (Bank 2)

Possible Causes:


Air leaks in intake manifold, exhaust pipes or exhaust manifold.Fuel control sensor is out of calibration (ECT, IAT or MAF).Low fuel pressure (fuel filter clogged, pressure regulator failure).One or more injectors restricted or pressure regulator has failed.HO2S element is contaminated, deteriorated or has failed.Vacuum hose is disconnected, broken, leaking or loose.

Oct 24, 2012 | 1999 Chevrolet Express

2 Answers

Having the same problem on a 2005 4.3l....... replaced plugs, dist. cap, coils, and cam sensor. o2 sensor is good. idles great till you push the gas, then it misfires. timing was checked it was fine. ...


Something is probably leaning out the mixture when you open the throttle. It seems that any ignition issues have been ruled out.

So, check the following: fuel filter clogged, low fuel pump pressure, the fuel pressure regulator could be stuck at the idle setting, the EGR valve could be stuck open, faulty throttle position sensor (TPS) or circuit, faulty manifold absolute pressure (MAP) sensor, faulty or dirty manifold air flow (MAF) sensor, faulty intake air temperature (IAT) sensor, and an air leak into the intake duct or manifold between the MAF and the throttle body. I think if the intake manifold gasket had a leak, it would be misfiring at idle.

Ask the shop if any of the above checks have already been accomplished. I'll bet most of them have, but one may have been overlooked.

Feb 25, 2011 | 1998 Chevrolet C1500

2 Answers

Fuel Pump Regulator on 2003 Buick Century 6 cyclinder. How much trouble is it to replace?


easy,it's on the fuel rail,make sure that is the problem and not the pump,check fuel pressure before the regulator.











TIM..........

Oct 25, 2010 | 2003 Buick Century

2 Answers

Locating fuel pressure regulator


Fuel Pressure Regulator Removal & Installation 2.2L Engine To Remove:
  1. Relieve the pressure in the fuel system.
  2. Disconnect the negative battery cable.
  3. Disconnect the vacuum hose from the fuel pressure regulator.
  4. Remove the pressure regulator mounting screw.
  5. Remove the fuel pressure regulator assembly with O-ring. Inspect filter screen for contamination. If contaminated, remove and discard.
Fuel pressure regulator removal/installation (2.2L SFI engine) gm-05-22-619.gif

To Install:
  1. Apply clean engine oil to the new pressure regulator O-ring and install the O-ring on the regulator.
  2. Install the regulator on the fuel rail. Apply thread-locker to the mounting screw.
    • Tighten the screw to 106 lb in (12Nm).
  3. Connect the negative battery cable.
  4. Use the following procedure to pressurize the fuel system and check for leaks;
  5. Turn the ignition ON for 2 seconds.
  6. Turn the ignition OFF for 10 seconds.
  7. Turn the ignition switch back ON to run the fuel pump again and pressurize the fuel system.
  8. Check the fuel rail assembly for fuel leaks.
4.3L Engine RPO L35 To Remove:
4.3L (RPO L35) Fuel meter body assembly gm_trk_sil15_02-04_43_fuel_metr_body_assy.gif

  1. Before servicing the vehicle, refer to the Cautions and Warnings in the beginning of this section
  2. Remove or disconnect the following:
    • Upper intake manifold (See: Upper Intake Manifold)
    • Fuel pressure regulator retainer clip (M) and discard the clip
    • Regulator (N) from the housing by twisting and pulling the fuel pressure regulator (N) and using a shop towel to catch any spilled fuel
    • Regulator seal O-ring (R) and discard the O-ring seal
    • Regulator filter (Q) and discard the filter
    • Regulator seal O-ring (P) and discard the O-ring seal
    • Backup ring (O) and discard the ring
  3. Cover the fuel pressure regulator housing to prevent contamination from entering the fuel system
To Install:
4.3L (RPO L35) Fuel meter body assembly gm_trk_sil15_02-04_43_fuel_metr_body_assy.gif

  1. Lubricate the NEW O-ring seals with clean engine oil
  2. Assemble the following new parts to the fuel pressure regulator:
    • Backup ring (O)
    • Regulator seal O-ring (P)
    • Regulator filter (Q)
    • Regulator seal O-ring (R)
  3. Install or connect the following:
    • Fuel pressure regulator with the vacuum tube pointing down
    • Fuel pressure regulator retainer clip (M)
    • Upper manifold
  4. Test drive the vehicle to confirm the repairs
RPO LU3 To Remove:
4.3L (RPO LU3) Fuel meter body assembly gm_trk_sil15_02-04_43_rpolu3_fuel_metr_body_assy.gif

  1. Before servicing the vehicle, refer to the Cautions and Warnings in the beginning of this section
  2. Remove or disconnect the following:
    • Upper intake manifold
    • Fuel pressure regulator retainer clip (E)
    • Regulator (F) from the housing by twisting and pulling the fuel pressure regulator (F) while using a shop towel to catch any spilled fuel
    • Regulator seal O-ring (J) and discard the O-ring seal
    • Regulator filter (I) and discard the filter
    • Regulator seal O-ring (H) and discard the seal
    • Backup ring (G) and discard the backup ring
  3. Cover the fuel pressure regulator housing to prevent contamination from entering the fuel system
To Install:
4.3L (RPO LU3) Fuel meter body assembly gm_trk_sil15_02-04_43_rpolu3_fuel_metr_body_assy.gif

  1. Lubricate the NEW O-ring seals with clean engine oil.
  2. Assemble the following new parts to the fuel pressure regulator:
    • Backup ring (G)
    • Regulator seal O-ring (H)
    • Regulator filter (I)
    • Regulator seal O-ring (J)
  3. Install or connect the following:
    • Fuel pressure regulator (F) with the vacuum tube pointing down
    • Fuel pressure regulator retainer clip (E)
    • Upper intake manifold
  4. Test drive the vehicle to confirm the repairs
prev.gif next.gif

Aug 05, 2010 | 2001 Chevrolet Blazer

2 Answers

When you turn the key on excessive fuel flows into the air intake. its a 1989 6 cylinder 3.1 fuel injected


You could have either an injector that is stuck open or a fuel pressure regulator that has developed a leak. A leaky injector will usually only leak fuel into one cylinder as it is located just above the intake valve in the lower part of the intake while a leaky fuel pressure regulator will leak fuel into the front end of the intake manifold [behind the throttle plates] and the fuel will acuumulate throughout the upper intake plenum. When a fuel pressure regulator develops a leak the fuel that is escaping from it flows through the small 1/8" diameter plastic vacuum line which goes from the top of the regulator to the intake manifold. Even a trace of fuel in this line means the regulator is bad. I've seen both leak items leak but probably replace 10 regulators leak for every one injector. Good luck, hope you find your problem!

Jul 22, 2010 | 1989 Oldsmobile Cutlass Supreme

1 Answer

#3 CYLINDER IS FULL OF FEUL AND TRUCK WILL NOT START.REMOVED SPARK PLUGS AND GAS POURS ON GROUND WHEN KEY IS TURNED ON FROM #3 CYLINDER PLUG HOLE.


The Vortec engines were notorious for those kind of problems. The problem will be under the upper-intake manifold, and the fuel injector assembly will either have a cracked plastic fuel line running out to one or more of the fuel injectors, or the fuel pressure regulator that is located on the end of the fuel injector assembly is faulty or it has detached from the fuel injector assembly. Either way the lower intake manifold will be flooded with fuel anytime that the fuel pump runs.

There were two types made, the first type had fuel lines that connected to the lower intake manifold, and then from the metal fittings the fuel line turns into plastic and runs inside the lower intake manifold and under the upper-intake manifold where it runs over to the fuel injector assembly, and this type can really flood out an engine when it becomes faulty.

The second type had metal fuel lines running over the upper intake manifold and they connected to the top of the fuel injector assembly, however, under the upper-intake manifold there are still plastic lines to the fuel injectors and also the fuel pressure regulator that could be faulty and cause the engine to severely flood.

The upper-intake manifold is not that difficult to remove, and after you remove the upper-intake manifold then (replace the fuel lines to the fuel injector assembly if it is the second type) turn the ignition to the "Run" position and when the fuel pump runs you should see where the fuel is leaking/spraying from, and it will most likely be a large high pressure leak from a ruptured plastic fuel line.

Let me know if you require any further assistance.

Jul 20, 2010 | 1994 Chevrolet S-10 Blazer

2 Answers

I have fuel in the oil


Sounds like a top end repair of seals or a piston ring issue, or the intake manifold gaskets are leaking. With the age of the vehicle you may be able to go with the intake gasket first but if its the heads then you have to do it twice, and if its the rings allowing blow by you would have to take the heads off anyway. Just be careful so you get it narrowed down quick and easy check compression to see about blowby and the head may help.

Apr 29, 2010 | 1994 GMC Jimmy

1 Answer

Where is fuel pressure regulatore located


For 2000 Chevrolet Truck Blazer 4WD 4.3L SFI 6cyl
If your engine is a 4.3L V-6 with CPI (central point injection) it is inside the upper intake manifold. The upper intake manifold is bolted on top of the normal intake manifold.

The throttle body is mounted on it and your fuel lines terminate into the center of this.


Removal & Installation
  1. Relieve the fuel system pressure.
  2. Remove the air cleaner outlet resonator.
  3. Disconnect the engine wiring harness from the retaining clips at the front of the engine.
  4. Disconnect the fuel pressure regulator vacuum line.
  5. Clean any dirt from the fuel pressure regulator and the surrounding area.
  6. Disconnect the fuel return pipe.
  7. Remove the fuel return pipe retainer.
  8. Remove the fuel pressure regulator retainer.
  9. Remove the fuel pressure regulator.
  10. Inspect the regulator filter screen for contamination. If contaminated, replace the fuel pressure regulator.
To install:


aaf5240.jpg
Fig. Fuel pressure regulator-4.2L engine
  1. Install the regulator filter.
  2. Install the new O-ring on the fuel pressure regulator.
  3. Lubricate the fuel pressure regulator O-ring with clean engine oil.
  4. Push the fuel pressure regulator into the regulator housing on the fuel rail.
  5. Install the fuel pressure regulator retainer. Tighten the regulator retainer screw to 71 inch lbs. (8 Nm).
  6. Install the fuel return pipe retainer. Tighten the return pipe retainer screw to 71 inch lbs. (8 Nm).
  7. Connect the fuel return pipe.
  8. Connect the fuel pressure regulator vacuum line.
  9. Connect the negative battery cable.
  10. Inspect for leaks:
    1. Turn ON the ignition for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition.
    4. Inspect for fuel leaks.
  11. Install the engine wiring harness into the retaining clips at the front of the engine.
  12. Install the air intake resonator.
Hope help with this (remember rated this post).

Feb 26, 2010 | 2000 Chevrolet Blazer

2 Answers

Vacuum lines


Hello, I have the 1993 Ford Festiva shop manual in front of me. The vacuum hose on the Fuel Pressure Regulator goes to the intake manifold. The manual says that the fuel pressure is maintained at a constant 36.3 psi, and when the engine vacuum drops (caused by high fuel demand) it causes the fuel pressure to increase inside the regulator. There should be a vacuum diagram on the bottom side of the hood that will help to show you what vacuum port on the manifold that it attaches to. If the decal is gone, look on the intake manifold for a vacuum port that is open and causing a vacuum leak. I hope this helps.

Oct 15, 2009 | 1993 Ford Festiva

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

155 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...