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How do I check the fuel pressure pump on my 91 mazda mvp?

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My 1994 mazda navaho seems to be vapor locking. How do i fix this


You need to know the fuel pressure. Just turning the key to on should cause the fuel pump to put high pressure in the fuel line to the engine and fuel injectors. If the pump doesn't turn on, there is an Inertia fuel shutoff switch in the power line going to the pump, so check that has not tripped.

If hard starting or running poorly problems, you could have a fuel pump that still works but fails to keep adequate pressure- a weak pump that needs replacing. If your Mazda has a fuel pressure test port, called a shrader valve, it is easy to hook up a fuel pressure test gauge to check fuel pressure. Autozone and maybe other national stores rent or loan fuel pressure testers.

Aug 15, 2015 | Mazda Cars & Trucks

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What does it mean if there isn't any fuel in the low pressure filter on the 2004 mazda mvp


you should check your fuel pump not enough fuel is going to your low pressure filter
thanks

Jul 15, 2009 | 2004 Mazda MPV

1 Answer

Hello I have Mazda 2000 MVP when the gas is full the car run fain but if it's below the half level the car can not go faster than 40km.


Have your fuel pressure tested when above half and when it starts to run slow, you may find that you are losing fuel pressure when pump gets hot and at lower level. May be time for new pump, plus filter is part of fuel pump module inside gas tank. Be sure to have it tested though to confirm before replacing if necessary.

Apr 09, 2012 | 2000 Mazda MPV

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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:

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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

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Where is the fuel pump on a mazda protege 93?


The fuel pump is in the fuel tank. You have to remove the tank to get the pump out. I would check the fuel pressure with a gauge to make sure the pump was out just to be sure. Changing the pump is a lot of work, and checking the fuel pressure will let you know if you need a new pump.

Dec 18, 2010 | 1993 Mazda Protege

1 Answer

1998 MPV: 98 mazda mvp if i ground the black and red wirer a...


That wire is input 4S to the powertrain control module. I dont know if having it grounded all the time will affect the powertrain control computer but it doesnt seem to want to hurt the fuel pump circuitry itself from looking at the schematics. I'd try to ground it start it then make sure of course the relay opens when you shut it off then try to drive it to make sure the grounded pin on the PCM doesnt affect the transmission.

May 17, 2010 | 1998 Mazda MPV

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Where is the fuel pump relay located on my 91 mx6. i found the area just dont know which of the 4 relays it is


you can put your hand on the casings while someone turns the key to the ON position. *(do not start the motor)

The one that clicks on for about two seconds and then clicks off is the fuel pump relay. It is pressurizing the fuel rail prior to starting.

Good luck and be careful!

Apr 02, 2010 | 1993 Mazda MX-6

1 Answer

My 91 mazda mpv 4x4 van won't start. we were


than I would have the fuel pressure check and change the fuel filter

Mar 09, 2010 | 1991 Mazda MPV

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