Question about 1999 Mazda 626

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Easy way to relieve fuel line pressure

Should I disconnect the fuel pump fuse, try to start car and if starts let it run till it stops. Fuel pressure should be relieved???

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That will work

Posted on Jan 12, 2009

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You know when you go to put petrol in and you take the petrol cap off, and you hear it **** in air for a split second, You just relieved the fuel line pressure. :)

Posted on Jan 12, 2009

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1 Answer

Changing fuel filter how do I release the fuel pressure can I unplug the fuel pump I have easy access to it


Just take out the fuel pump fuse, then run engine until it stalls. That's about the same as disconnecting the fuel pump and run engine until it stalls. Just disconnecting the pump will not relieve pressure, as there is a check valve at the pump which holds pressure in the line.
When engine stalls, there will still be some fuel in the line, maybe with a small amount of pressure, so use a rag to catch the fuel spill when you take line off at the filter.

Nov 25, 2015 | Cars & Trucks

1 Answer

Loosing fuel pressure every ten to twelve seconds


are you using a gauge? is this the 1.0L engine 3cylinders.
Trottle body injection (TBI) >
running or not?
the correct way to do this is measure at the fuel filter test port

ill quote the FSM
  1. Relieve fuel system pressure.
  2. Disconnect the fuel inlet line at the fuel filter and install a suitable pressure gauge on the line.
  3. Connect a jumper wire between the terminals of the fuel pump relay connector and check the system pressure on the gauge.
  4. Fuel pressure should be 25-33 lbs.
  5. As the pressure reaches 33 lbs., the relief valve in the pump should pulsate the pressure so it is always within specification.
  6. If the pressure is above specification, check for restrictions in the fuel lines. If no restrictions are found, replace the fuel pump. If the pressure is below specifications, check for battery voltage to the fuel pump and correct as required. If battery voltage is found, replace the fuel pump or fuel pump relay.
  7. Before removing the pressure gauge, relieve the fuel pressure again.
  8. Reconnect the fuel line. Start the engine and check for leaks.
end quote.

Jan 28, 2014 | 1993 Geo Metro

1 Answer

1996 HONDA CIVIC FUEL SHUTOFF DEVICE WHERE IS IT LOCATED


Don't think there is such a device. You can pull the fuel
pump connector under the rear seat or try removing the
fuel pump fuse located in the engine compartment or
under driver's side dash. Once fuel pump is disabled
start the car and let it run till it stops to relieve fuel
system pressure.

Feb 02, 2011 | 1996 Honda Civic

1 Answer

Where is the fuel pump located in a 1985 fiero


from autozone.com:

The Fiero is equipped with a electric fuel pump and gauge sending unit mounted in the fuel tank. The pump is serviced and a complete unit by removing the fuel tank.
REMOVAL & INSTALLATION

CAUTION To reduce the risk of fire and personal injury, it is necessary to relieve the fuel system pressure before servicing any fuel system component. If this procedure is not performed, fuel may be sprayed out of the connection under pressure. Always keep a dry chemical (Class B) fire extinguisher near the work area.

  1. Disconnect the negative (-) battery cable.
  2. Relieve the fuel system pressure.

Remove the fuel pump fuse from the fuse block located in the passenger compartment. Start the engine and run until the engine stops due to the lack of fuel. Crank the engine for 3 seconds to ensure all pressure is relieved.
  1. Drain all the fuel from the tank using a suction pump.
  2. Raise the vehicle and support with jackstands.
  3. Disconnect the wiring from the tank.
  4. Remove the ground wire retaining screw from under the body.
  5. Disconnect all hoses and filler neck from the tank.
  6. Support the tank on a jack and remove the retaining strap nuts.
  7. Lower the tank enough to disconnect the fuel sending unit wires.
  8. Disconnect the fuel line, vapor line and return line.
  9. Remove the tank from the vehicle.
  10. Remove the fuel gauge/pump retaining ring by turning the cam lock ring counterclockwise using a spanner wrench such as tool J-24187.
  11. Remove the gauge unit and the pump.

To install:
  1. Inspect the fuel pump attaching hose for any signs of deterioration and replace if necessary. Also, check the rubber sound insulator at the bottom of the pump.
  2. Push the fuel pump assembly into the attaching hose.
  3. Using a new O-ring seal, install the pump assembly into the tank.
  4. Install the cam lock ring over the pump and lock by turning clockwise with a spanner wrench J-24187 or equivalent.
  5. Support the tank on a suitable jack.
  6. Raise the tank enough to connect all fuel and filler hoses.
  7. Connect all electrical wires to the pump and tank.
  8. Raise the tank and install the retaining strap nuts. Use new sound reducing pad if they are damaged. Check all connections and wire to ensure proper installation before refilling the tank.
  9. Refill the tank with unleaded fuel. Reconnect the negative (-) battery cable.
  10. Start the engine and check for fuel leaks and gauge operation.

Nov 07, 2010 | 1985 Pontiac Fiero

1 Answer

Honda Civic Coupe. Year 2000 1.6. How can I depressurize the fuel system easily to change the fuel filter situated in the engine compartment.


Hi,

IMPORTANT: Do not skip the fuel system pressure release step. Injury and other damage can result!
Safety Step! Relieving Fuel System Pressure
· allow engine to cool
· relieve fuel system pressure
· put on your eye protection
Before you begin the job of replacing your fuel filter, you must relieve the pressure in your fuel system. A fuel injection system operates under very high pressure. If you don't release this pressure before you start unscrewing fuel lines the result can be explosive. Do this before you attempt to change the fuel filter.
To release the pressure in your fuel lines (and fuel filter) you'll need to locate the fuel pump fuse in the fuse box. If you don't have a fuel pump fuse, find the relay that operates the fuel pump. Once you've found the fuel pump fuse or relay, start the car. With the engine running, pull the fuse or relay out. If you pulled the right one, the engine will quickly die. Since it's using all of the pressurized fuel in the system, the fuel lines won't be pressurized when you crack the fittings on your fuel filter.
Now that you've relieved the fuel pressure you can remove the old fuel filter.
If you didn't do this yet, you must go to the previous step and do it. Very dangerous!

Best regards.

Oct 28, 2010 | 2000 Honda Civic

2 Answers

How do I relieve fuel line pressure before changing fuel filter?


remove the pump fuse, start the car. fuel pressure relieved.

Mar 18, 2010 | 1997 Chrysler Town & Country

1 Answer

Relieving fuel pressure on 2005 Chevrolet Tahoe


Pull out the fuel pump relay and start the engine, let it run till it goes dead. fuel pressure relieved!

Apr 25, 2009 | 2005 Chevrolet Tahoe

1 Answer

How change fuel fiter on 99 malibu


remove negative cable from battery, relieve fuel pressure(by removing fuse and run till it dies, or relieve pressure from shraider valve on engine) the filter is just ahead of gas tank,depress the white disconnect tabs , and remove line. use a wrench for other side of filter, detach fuel filter holder and remove. installation is in reverse order.

Apr 09, 2009 | 1999 Chevrolet Malibu

2 Answers

I need to change a fuel pump in a 2000 buick lesabre how ineed instruction please


It's a little more involved than just popping out the old pump and putting in the new.

It's important to relieve the fuel pressure. Start the car and pull the fuel pump fuse oe relay.
let the engine run 'till it dies. The fuel pressure should be gone.

The '00 Le Sabre has and access hole in the trunk with a half-dozen screws holding the cover.

Disconnect the fuel lines and electrical connectors. Wrap them with a shop rag first.

Use plenty of ventilation. Fumes can build up in the trunk and you will be setting in the middle
of a bomb.

Be careful with your light. (leave it outside of the trunk).

Remove the carpet.(it can generate static).
GM recommends replacing the seal.
You can get pumps and repair kits on E-Bay.

Mar 31, 2009 | 2000 Buick LeSabre

1 Answer

How do I relieve the fuel system pressure on a '96 Mazda 626?


remove the rear seat cushion ,remove the fuel pump access cover ,start the engine and wait for engine to stall ,then turn the ignition off , the fuel system is now depressurized.

Jan 24, 2009 | 1996 Mazda 626

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