How do i remove the fuel delivery and return connectors at the engine

P0172 - System Too Rich (Bank 1)
The adaptive fuel strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a lean calibrated limit. Refer to Section 1 , Powertrain Control Software, Fuel Trim for more information. Fuel System.

• Fuel Pressure Regulator (vacuum hose off, diaphragm leak, malfunctioning).
• Leaking fuel injectors.
• Fuel return line restricted.
• Fuel rail pressure sensor (incorrect reading).
• EVAP canister purge valve leak (when canister is full).

Base engine.

• Engine oil contamination.

Air Measurement System.

• MAF sensor (contaminated, damaged, or corroded connector).

View Freeze Frame Data to determine the operating conditions when the DTC was set. Observe the LONGFT1 and LONGFT2 PID(s). Refer to Section 2 , Adaptive Fuel DTCs Diagnostic Techniques for more information.

Below are directions to remove the engine. The engine and transaxle assembly have to come out as one unit and they come out from the bottom:
REMOVAL 1. Remove the battery. Detach the air cleaner. Disconnect the engine harness connectors. A. Engine wiring connectors (alternator, starter, etc.) B. TPS connector C. Oil pressure gauge connector. D. Back up lamp switch connector. E. A/T solenoid, inhibitor switch connector. F. Coolant temperature sensor. G. Ignition coil, power TR connector. H. Idle speed control valve (ISC) connector. I. MAP and ATS connectors. J. Oxygen sensor connector. Drain the engine coolant. . For a vehicle with automatic transaxles, disconnect the transaxle oil cooler hoses, When disconnecting hoses, make identification marks to avoid making any mistake when installing them again Be careful not to spill any of oil or fluid out of the hoses. Plug the openings to prevent the entry of foreign material. Disconnect the radiator upper and lower hoses on the engine side then remove the radiator assembly. Disconnect the engine ground. . Disconnect the brake booster vacuum hose. Disconnect the heater hoses (inlet and outlet) on the engine side.
Disconnect the accelerator cable at the engine side. Using a special tool, remove the main fuel line at the delivery pipe (supply/return). . Disconnect the speedometer cable from the transaxle. Disconnect the clutch cable or
control cable from the transaxle.Disconnect the power steering suction hose and return hose from the pump. Detach the steering dust cover in the engine compartment and then disconnect the gear box universal joint bolt. Make sure to make identification marks between the universal joint and the gear box for reassembly. . Raise the vehicle and then remove the front tire. 17. Remove the calliper assembly from the knuckle.Using wire, hang it from the suspension..Loosen the strut lower bolts and then remove it. Remove the front muffler bolts.Remove the transaxle control rod and extension rod (M/T only).Put the special fixture on the T/M jack . and then adjust it to the sub-frame. Check that all the cables, harness connector and hose are disconnected from the engine and transaxle assembly.Remove the engine mounting bracket and the transaxle mounting bracket. Remove the sub-frame installation bolts. Lower the engine and transaxle assembly on the jack then, remove the front roll stopper and the rear roll stopper..Remove the engine and transaxle assembly as a unit.

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images for Where is the fuel pump prime connector .
Fuel pump prime connector - CamaroZ28.Com Message Boardwww.camaroz28.com > ... > LT1 Based Engine TechFeb 16, 2008 - I would like to pump most of it out using the fuel pump and was wondering if ... '92 chevy k1500 4x4 dd ... 1996 Pontiac Firebird Trans Am WS6.Chevrolet C/K 1500 Questions - Fuel delivery - CarGuruswww.cargurus.com > Questions > Chevrolet > C/K 1500CarGurusApr 18, 2014 - I replaced the fuel pump relay as well as the 20 amp in line fuse. ... Also bad grounds and any connector ... when truck sits it loses fuel system prime. truck runs smooth, fuel delivery is constant at high speeds, terrible ... my 1996 chevy 1500 4x4 5.7 will not run, its firing but no gas. i replaced the fuel filter and ...location fuel pump prime connector 97 chevy k1500 ...

I solved a similar problem with a Nissan. Under rear seat is a plate. Remove plate and you find the plastic delivery and return pipes with clip on connectors. Ideally you buy and replace there connectors but here in Africa they were not available. I simply cut off the pipe as close to the connector as possible. Then heated the end in boiling water and pressed it over the connector male side. It cools and shrinks and never leaked since. If I had a hose clamp, I would have added that for extra security because the delivery pipe is under high pressure from the electric pump in the tank( fuel injection models) most Japanese cars have very similar configurations and this plan can generally be made to worl

REMOVAL PROCEDURE
TOOLS REQUIRED
A J 34730-1A Fuel Pressure Gauge
A J 39765 Fuel Sender Lock Nut Wrench
CAUTION: Refer to Batterry- Disconnect Caution in Service Precautions.
1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure. See:
Fuel Delivery and Air Induction/Fuel Filter/Fuel Pressure Release/Service and
Repair
3. Drain the fuel tank. Refer to Fuel Tank Draining Procedure. See: Fuel Delivery and
Air Induction/Fuel Tank/Service and Repair/Procedures
4. Remove the fuel tank.
5. Remove the fuel sender assembly.
6. Disconnect the fuel pump electrical connector (5).
7. Remove the fuel level sensor electrical connector retaining clip (6).
8. Disconnect the fuel level sensor electrical connector (7) from under the fuel sender
cover.
9. Remove the fuel level sensor retaining clip (4).
10. Squeeze the locking fangs and remove the fuel level sensor (3).
INSTALLATION PROCEDURE
1. Install the fuel level sensor (3).
2. Install the fuel level sensor retaining clip (4).
3. Connect the fuel level s ens oi electrical connector (7).
4. Connect the fuel level sensor electrical connector retaining clip (6).
5. Connect the fuel pump electrical connector (5).
6. Install the fuel sender assembly.
7. Install the fuel tank.
8. Refill the fuel tank.
9. Install the fuel filler cap.
10. Connect the negative battery cable.
11. Inspect for leaks.
11.1. Turn ON the ignition for 2 seconds.
11.2. Turn OFF the ignition for 10 seconds.
11.3. Turn ON the ignition.
11.4. Inspect for fuel leaks.

Hi there:
This Australia made TOYOTA CAMRY SV21 was produced in 1989, similar at 3S-FE Engine...

1. Disconnect the negative battery cable.
2. Disconnect the harness from the cold start injector.
3. Place a towel or rag under the cold start injector pipe and remove the two union bolts, four gaskets and delivery pipe.

Loosen the union pipe bolts slowly.

1. Disconnect the vacuum sensing hose from the fuel pressure regulator.
2. Disconnect the fuel return pipe hose.
3. Remove the pulsation damper with the two gaskets. Discard the gaskets and purchase new ones.
4. Unbolt and remove the delivery pipe with the injectors attached.

When removing the delivery pipe, take care not to drop it as damage to the injectors may result.

1. Remove the four insulators and two spacers from the cylinder head.
2. Gently pull the injectors from the delivery pipe.
3. Remove the O-rings and grommets from the injectors and purchase new ones.

To install:

1. Install a new grommet and new O-ring onto each injector. Make sure that they are installed evenly, to ensure a good seat and save yourself from having to take the injectors out and readjust or replace the O-rings.

1. Lightly coat the O-rings with clean fuel.
2. Install the injectors into the delivery pipe. Do not **** the injector, install it straight into the opening using a light left to right twisting motion.
3. Place the four insulators and two spacers on the cylinder head.
4. Install the injectors together with the delivery pipe onto the cylinder head.
5. Go to each injector and rotate it by hand. The injector should rotate smoothly.

If the injectors don't rotate smoothly, the O-rings are probably not installed correctly or the injectors are not installed evenly. If this is the case, you will have the pull the delivery pipe off the intake manifold and look at the O-rings to make sure that they are installed correctly. Adjust the O-rings and, if damaged, replace them.

1. After the delivery pipe and injectors are properly in place, go to each injector and position the connector so that it is facing upward.
2. Install the two delivery pipe retaining bolts and tighten them to 9 ft. lbs. (12 Nm).
3. Install the pulsation damper with two new gaskets on both sides of the fuel hose "banjo'' fitting. Tighten the damper.
4. Connect the fuel return hose.
5. Attach the injector connectors.
6. Connect the vacuum sensing hose.
7. Using new gaskets, connect the cold start injector pipe to the delivery pipe and cold start injector. Tighten the two union bolts to 13 ft. lbs. (17 Nm).
8. Attach the cold start injector wiring connector.
9. Connect the negative battery cable.
10. Short the +B and Fp terminals of the engine check connector with a jumper wire.
11. While the connector is shorted, pinch the fuel return hose. When the pinched, this causes the pressure in the high pressure fuel line to rise to 57 psi. ( kPa) At this time any leaks in any part of the system should be apparent. Carefully look at each component for leakage and run the tip of your finger around each connection.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

REMOVAL & INSTALLATION 2.3L 4-Cylinder and 2.8L 6-Cylinder Engines

1. Properly relieve the fuel system pressure.
2. Disconnect the negative battery cable.
3. Raise and support the vehicle safely.
4. Remove the fuel tank.
5. Loosen the lock ring at the top of the fuel tank and remove the sending unit with the transfer pump attached. Note the direction of the float in the tank.
6. Remove the transfer pump from the sending unit. To install:
   
7. Install the transfer pump on the sending unit.
8. Install the sending unit in the fuel tank and tighten the lock ring to specification. Do not overtighten the lock ring as the plastic threads on some fuel tanks are easily stripped.
9. Install the fuel tank in the vehicle.
10. Lower the vehicle.
11. Connect the negative battery cable.
12. Start the engine and check for leaks. Fig. 1: Fuel pump assembly for the 2.3L 4-cylinder engine
    Fig. 2: Fuel pump assembly for the 2.8L 6-cylinder engine
    

2.3L and 2.4L 5-Cylinder, and 2.9L 6-Cylinder Engines

1. Relieve the fuel system pressure.
2. Disconnect the negative battery cable.
3. Tilt the rear seat forward and remove or fold back the trunk compartment carpet over the right-hand wheel well panel.
4. Disconnect the fuel pump electrical connections. NOTE: Take note of the color markings on the hoses; colored tape should identify hose locations on the pump.
   
5. Detach the quick-connect couplers for the fuel delivery and return hoses.
6. Remove the pump unit by unscrewing the retaining nut using tool 999-5485 or equivalent.
7. Lift the pump out carefully and remove the rubber seal. When lifting the pump out, do not grab the connections with pliers or any other sharp tools that might cause damage and result in fuel leakage. To install: WARNING
   Install the retaining nut while the pump is removed, otherwise the tank connection may swell and the nut will be difficult to install.
   
8. Install a new dry seal, making sure that it is seated properly. Lubricate the top and outer side of the seal with petroleum jelly.
9. Install the pump with the heater connection facing towards the right side of the vehicle.
10. Install the fuel pump retaining nut and tighten it to 30 ft. lbs. (40 Nm) using tool 999-5484 or equivalent.
11. Apply a small amount of petroleum jelly to the delivery and return hose ends and install them on the pump. The delivery line is marked with yellow tape, which should be matched to the yellow marked pump outlet. Make sure that the quick-connectors are properly seated on the pump.
12. Connect the electrical connections, making sure that they are in the correct position. Install the panels and carpets.
13. Connect the negative battery cable.
14. Run the engine and check for leaks. Fig. 3: Remove the clips retaining the carpet . . .
    Fig. 4: . . . to expose the fuel pump access cover
    Fig. 5: The rear seats can be folded down from the inside, but this lever must be in the up position
    Fig. 6: Release this lever from inside the car to lower the rear seats
    Fig. 7: Remove the trim retaining bolt from the bottom of the panel
    Fig. 8: Remove the seat back striker using a T30 Torx® bit
    Fig. 9: Carefully push the trim back . . .
    Fig. 10: . . . to access the fuel pump harness connections
    Fig. 11: Remove the fuel pump access cover retaining bolts
    Fig. 12: When the cover is removed, the fuel pump is visible
    Fig. 13: Detach the quick-connect fittings . . .
    Fig. 14: . . . and remove the fuel lines from the pump
    Fig. 15: Use wrench 5485 or equivalent to remove the fuel pump retaining ring
    Fig. 16: After the retaining ring is removed, lift the pump out of the tank
    

REMOVAL & INSTALLATION Fig. 1: Removing injectors from fuel rail
Fig. 2: Make sure injectors rotate freely in cylinder head

1. Relieve fuel system pressure and disconnect the negative battery cable.
2. Remove intake air hose between throttle body and intercooler.
3. Remove accelerator cable.
4. Unclamp PCV and fuel return hoses from deliver pipe.
5. Unclamp injector wiring harness.
6. Disconnect injector coupler.
7. Remove cold start injector pipe from delivery pipe.
8. Remove vacuum hose from pressure regulator.
9. Remove fuel feed hose from delivery pipe.
10. Remove pressure regulator from delivery pipe.
11. Remove delivery pipe with injectors.
12. Remove injectors from delivery pipe. To install:
    
13. Replace injector O-rings and lubricate with fuel. NOTE: Make sure injectors rotate smoothly. If not, probable cause is incorrect installation of O-ring.
    
14. Check if insulator is scored or damaged. If it is, replace with new one.
15. Connect delivery pipe with injectors.
16. Install pressure regulator to delivery pipe using a new O-ring.
17. Install fuel feed hose to delivery pipe.
18. Install vacuum and fuel return hoses to pressure regulator and clamp securely.
19. Install cold start injector pipe to delivery pipe using new gaskets.
20. Install injector coupler. Clamp injector wiring harness.
21. Install PCV hose to cylinder head.
22. Install throttle position sensor coupler.
23. Install accelerator cable and adjust free-play.
24. Install intake air hose to throttle body and intercooler.
25. Connect the negative battery cable.
26. Start engine and check for leaks.

2001 Ford Taurus V6-3.0L DOHC VIN S
Fuel Pump: Service and Repair

REMOVAL
1. Remove the fuel tank.
2. Clean the area around the fuel pump mounting flange.
3. Using the special tool, remove the fuel module retaining ring.(Screwdriver and hammer)
4. Remove the fuel delivery module from the fuel tank.
CAUTION: The fuel delivery module must be handled carefully to avoid damage to the float arm, filter, and convolute hoses.
INSTALLATION
1. To install, reverse the removal procedure.
NOTE: A stop should be felt when aligning the raised arrow on top of the fuel tank delivery module to the dot on the fuel tank.

Tank—Fuel Removal
WARNING: Do not smoke, carry lighted tobacco or an open flame of any type when working on or near any fuel-related component. Highly flammable mixtures are always present and may ignite, resulting in possible personal injury.
WARNING: Fuel in the fuel system remains under high pressure even when the engine is not running. Before servicing or disconnecting any of the fuel system components, the fuel system pressure must be relieved to prevent accidental spraying of fuel causing personal injury or a fire hazard.
NOTE: The fuel tank comes equipped with a composite protective shield mounted with the support straps on the right side of the fuel tank. Make sure the protective shield is installed correctly whenever the fuel tank is installed.

1. Disconnect the battery ground cable. For additional information, refer to Section 414-00.

1. Relieve the fuel pressure. For additional information, refer to Section 310-00.

1. Drain the fuel tank. For additional information, refer to Section 310-00.

1. Raise and support the vehicle. For additional information, refer to Section 100-02.

1. Remove the fuel tank filler pipe hoses.
   • Remove the clamps.

1. Disconnect the fuel pump connector.

1. Disconnect the tank connections:
   1. Disconnect the fuel lines. For additional information, refer to Section 310-00.
   1. Disconnect the vapor tube fitting. For additional information, refer to Section 310-00.

1. Remove the center fuel tank strap bolt and remove the support strap.

1. Position a safety support under the fuel tank.

1. NOTE: Safety support not shown for clarity.
   Remove the fuel tank support strap bolts.

1. Partially lower the fuel tank while swinging the fuel tank support straps away from the fuel tank. Remove the straps and lower the fuel tank.

Installation

1. To install, reverse the removal procedure.

Module—Fuel Delivery
Special Tool(s) Fuel Sender Wrench
310-069 Removal

1. Remove the fuel tank (9002). For additional information, refer to Tank—Fuel in this section.
1. Clean the area around the fuel pump mounting flange.
1. Remove the fuel module connections:
   1. Disconnect the fuel tank pressure sensor electrical connector.
   1. Disconnect the fuel fittings. For additional information, refer to Section 310-00.
1. If repair or installation of new fuel lines or a new electrical harness is necessary, remove the fuel lines or harness from the fuel tank retaining clips and remove the appropriate assembly.
1. Using the special tool, remove the fuel module retaining ring.
1. CAUTION: The fuel delivery module must be handled carefully to avoid damage to the float arm and filter.
   Remove the fuel delivery module from the fuel tank.
Installation

1. NOTE: Make sure that the areas around the fuel delivery mounting area and the fuel delivery module flange are clean.
   NOTE: When installing the fuel delivery module, make sure to align locator tabs on the fuel tank mounting flange.
   To install, reverse the removal procedure.