Question about 2000 Hyundai Elantra

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2000 elantra no power to fuel pump.

Replaced fuel pump tested for power at pump but no power. Tested for power at pressure regulator 12 volts in, 4 volts out? Checked relays for fuel pump all good.

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Could be a bad earth or [ground]
the power wire ma be brocken or have a loose or dirty connection
you neeed to trace it along its lenght to determine the fault!
so start at the pump & work back
Cheers rob

Posted on Jul 20, 2009

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Click the link below to go through its procedure: ----

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http://technoanswers.blogspot.com/2012/01/how-to-relieve-fuel-pressure.html
--------
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http://repairhelpcenter.blogspot.com/2012/01/refueling-problem.html
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http://schematicsdiagram.blogspot.com/2011/12/how-to-increase-gas-mileage-on-2011.html
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-------------------
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--------------
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------------
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http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-fuel-pressure-regulator.html
---------------
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------------------
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---------
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--------
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1 Answer

How do I check the fuel pressure on a 2000 model mazda millenia with a 2.3 engine in it


Hi.

You connect a fuel pressure gauge like this to the pressure rail. Pressure in this car must be between 35 and 45 psi. If pressure is too low look for kinked fuel lines and eventually replace the pump. If the pressure drops down more than 10 psi in five minutes or if the pressure is considerably higher than that replace the fuel pressure regulator. Below the parts that may need testing:

ginko_261.gif

1. Fuel tank
2. Shut-off valve
3. Non-return valve
4. Fuel pump
5. Fuel pump (Transfer)
6. Fuel filter (High-pressure)
7. Injector
8. Pressure regulator
9. PRC solenoid valve
10. Fuel pump relay
11. Fuel pump resistor and relay (KJ model)

Aug 04, 2011 | 2000 Mazda Millenia

1 Answer

2002 sebring, 2.7 engine replaced 15000 miles ago. Exhaust just replaced, needs downstream O2 sensor. The problem: Car will not start. Lights, fan blower work. Wipers do not turn on. Battery tested at...


the battery needs more power,, it needs to be over 12 volt..to startpay attention to the sound..
you may also not have enough fuel pressure.. you need to tested and must have 45psi
if not you have to replace the fuel pump

Dec 15, 2010 | 2002 Chrysler Sebring

1 Answer

I replaced the fuel filter and the pump and again the pump but still can not get fuel. What do i do?


Try checking your fuse and relay for the pump or the fuel pressure regulator. How are you checking for fuel? Pressure gage at fuel rail?

Nov 28, 2010 | 2000 Hyundai Elantra

3 Answers

1989 astro van turns over will not start seems not getting fuil gas tank full


#1 NEED TO VERIFY SPARK AT SPARK PLUGS # 2 CK FUEL PRESSURE AT SCHRADER VALVE ON FUEL RAIL ,,PRESSURE DEPENDS ON TYPE ENGINE ....IF NO SPARK AT SPARK PLUGS CHECK SPARK FROM COIL WIRE , IF NO SPARK AT COIL ,CHECK VOLTAGE TO IGNITION COIL SHOULD BE 12 VOLTS, IF NO VOLTAGE AT COIL ( KEY ON ) CHECK FUSES THEN IGHITION SWITCH. IF NO FUEL PRESSURE AND FUEL PUMP RUNS REPLACE PUMP .. CK VOLTAGE TO FUEL PUMP WHILE CRANKING . CK USING PUMP GROUND WIRE AT THE PUMP CONNECTOR THIS WILL PROVE GROUND ALSO. USE TEST LIGHT TO VERIFY

Aug 07, 2010 | 1989 Chevrolet Astro Cargo

3 Answers

2000 Malibu Starts then looses fuel pressure I have replaced the fuel pump and the fuel pump relay still same problem


Keep in mind that you have several components there:
- Fuel Pump Sender Assembly,
- Fuel Pressure Regulator,
- Fuel Rail Assembly, and
- Fuel Injectors.

1.- Fuel Pump (Sender Assembly) - TESTING
Refer to the accompanying charts for fuel pump diagnosis and testing.

The fuel injection system remains under pressure, even after the engine has been turned OFF. The fuel system pressure must be relieved before disconnecting any fuel lines. Failure to do so may result in fire and/or personal injury.

eb744a2.jpg

Fig. 3.1L engine OBD system check to be done before fuel pump relay circuit diagnosis


26456ba.jpg

Fig. 3.1L engine fuel pump relay circuit diagnosis (1 of 2)


b3b739d.jpg

Fig. 3.1L engine fuel pump relay circuit diagnosis (2 of 2)


db78a73.jpg

Fig. View of the fuel pressure test port (Schrader valve)-3.1L engine

A - 3.1L engine fuel system pressure test (1 of 4)
B - 3.1L engine fuel system pressure test (2 of 4)
C - 3.1L engine fuel system pressure test (3 of 4)
D - 3.1L engine fuel system pressure test (4 of 4)

c8a9798.jpg

Fig. The fuel pump/fuel sender module assembly is mounted in the fuel tank


2.-
Fuel Pressure Regulator - REMOVAL & INSTALLATION

(the fuel pressure regulator, which is located on the fuel rail assembly)

NOTE:
Before removing the fuel regulator assembly, place a clean shop towel under the regulator to catch any fuel drips

  1. Properly relieve the fuel system pressure.
  2. If not done already, disconnect the negative battery cable.
  3. On the 3.1L engine, remove the intake manifold plenum, as outlined in .
  4. On the 2.4L engine, remove the fuel rail. Refer to procedure earlier in this section.
  5. Detach the vacuum line from the regulator.
  6. Place a shop towel under the regulator to catch any fuel that may drip out. Unfasten the fuel pressure regulator retaining screw, then remove the regulator by twisting and pulling it from the fuel rail.
  7. Remove and discard the O-ring seal. Inspect the filter screen for contamination and replace if necessary.
To install:
  1. Prior to assembling the pressure regulator to the fuel rail, lubricate the new rail-to-regulator O-ring seal with clean engine oil.
  2. Place the O-ring on the pressure regulator and install the pressure regulator to the fuel rail.
  3. Install the retainer or coat the regulator mounting screws with an approved thread locking compound and secure the pressure regulator in place. Tighten the mounting screw to 76 inch lbs. (8.5 Nm).
  4. If removed, install the fuel rail assembly to the engine.
WARNING The fuel return pipe must be connected before tightening the regulator retaining screw to prevent the regulator from rotating. Rotation of the regulator could damage the retainer and spacer bracket and lead to a fuel leak at the regulator inlet.
  1. Connect the fuel feed line and return line to the fuel rail assembly, use a backup wrench on the fittings to prevent turning.
  2. Attach the vacuum line to the regulator.
  3. On the 3.1L engine, install the intake manifold plenum.
  4. Connect the negative battery cable. Turn the ignition to the ON position for two seconds, then turn it to the OFF position for ten seconds. Turn again to the ON position and check for fuel leaks.

continue...

May 24, 2010 | Chevrolet Malibu Cars & Trucks

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