Question about 1999 Toyota RAV4

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Replaced fuel pump and cant get fuel lines to prime

The new fuel pump is working, just cant get the fuel lines to reprime.

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1 Answer

There is no priming to do

If the injectors are working, any air
in the lines comes out into the cylinders,
then the fuel & your good to go

The fuel pump will push out any air with the fuel

Does the pump come on for 3 seconds with key on?

Do you have fuel pressure on a gauge at the motor?
You can push the button on the gauge to bleed off your air

Posted on Jan 24, 2013

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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: im haveing trouble finding the relay for the fuel

If the pump runs ok cold then it is not the relay but the pump that is at fault.

Posted on Mar 18, 2009

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1 Answer

2004 dodge 2500 ram diesel


I'm not familiar with that particular vehicle, but most diesel systems have a primer under the hood. You will need to pump that slowly until you feel some resistance. That will push fuel to the engine. The other pump may not be able to push fuel through until the system is primed.

If that doesn't get you running I would suspect a clogged fuel filter. Most Dodge vehicles have one on the frame. Just follow the fuel lines until you find it. There may also be one attached to the pump primer.

Changing that filter would my next action. Whether the pump is in the tank or added on outside the tank, you may still need to prime the system after the filter is replaced. Air in the line may cause it to stall, just reprime and start again.

Good luck.

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The pump works without priming anything. If the tank is vented, and you have fuel in the tank, and the pump is installed correctly, it should pump fuel out.
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It could either be a fuel pipe between your prime pump and injector pump that sucks air so your diesel flows back into your fuel tank. Or you need to replace the prime pump.There is a rubber diaphragm in the prime pump that gets worn. Unfortunately need to buy a new prime pump. A simple sollution is to fit a non return valve to your fuel line. That need to be connected between the prime pump and fuel tank. Hope it helps. Blessings

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The engine is a 12ht turbo diesel 85 modle hj61 land cruiser. engine will start, the base idle is low and runs rough RPM aprox 600. wind up base idle with idle screw to 1000 runs good but u can take turn...


Check to see stop solenoid is working, you may be able to do this by getting someone to turn the key on and off slowly while you are hold your fingers against the side of it.
It is the small metal (Nut) with a wire going into it for an easy description.
The reason you have to choke the engine to stop it is you have either no power going to the switch or the switch is not working properly. i would think more that the switch may not be working properly as it is meant to close fully when power is turned off, if this was working it doesn't matter how much the motor is reving it will still shut of the fuel to the pump.
Sometime these solenoids get a bit of dirt etc stuck in them s well, this is usually just a easy fix,clamp the rubber fuel line before the pump, undo the switch, clean it and refit it, then undo the clamp and prime the pump using the hand primer.
Then start the vehicle, don't try to start the vehicle before you have reprimed the pump as you can damage the engine if you don't have fuel going into it.
Hope this helps, and good luck with it.
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