Mercedes Mullins
Disconnecting the fuel lines of a 2006 Tacoma 4x4 Double Cab involves several steps. Firstly, you must discharge the fuel pressure by disconnecting the negative battery cable and removing the Circuit Opening Relay. After reconnecting the cable and running the truck until it dies, you can remove the fuel tank cap and reinstall the relay. Next, you must disconnect the fuel pump connector and remove the fuel filler neck, being careful not to stretch or break the wires. You should then pinch the connector and pull out the fuel tank vent hose, protecting the connector with a plastic bag. Finally, ensure everything is disconnected before fully dropping the tank.
2006 Tacoma fuel line disconnection procedure
| Characteristics | Values |
|---|---|
| Vehicle | 2006 Toyota Tacoma 4x4 Double Cab |
| Fuel line disconnection tool | Needle-nose pliers |
| Fuel line disconnection location | Connector at the fuel pump assembly |
| Fuel pump removal | Disconnect fuel pump connector, remove nuts securing fuel line to the underside of the vehicle |
| Fuel filter removal | Disconnect fuel lines from the filter, allow fuel to leak into a catch basin, remove the old filter |
| Fuel filter replacement | Insert new fuel filter with the same orientation as the old one, connect fuel lines to the new filter, tighten nuts |
| Fuel tank removal | Disconnect negative battery cable, remove Circuit Opening Relay, start the truck until it dies, disconnect negative battery cable again, remove skid plate, disconnect fuel lines at the tank |
| Fuel tank band removal | Remove two bolts on one side, then the clip and pin on the other side |
| Fuel filler neck removal | Slightly lower the tank, be careful not to break or stretch the wires |
| Fuel pump cover removal | Remove cover after lowering the tank to avoid excessive tension on the vent hose |
| Vent hose protection | Pinch connector and pull out the fuel tank vent hose, protect the connector with a plastic bag |
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What You'll Learn
Disconnecting the fuel pump
Firstly, disconnect the negative battery cable and go into the fuse block. Remove the Circuit Opening Relay, then reconnect the negative battery cable and start the truck until it dies. Crank the truck to ensure there is no fuel pressure left.
Now, to the fuel pump itself. Remove the fuel pump cover and disconnect the fuel pump connector using a pair of needle-nose pliers. You should see the fuel tank vent hose. Pinch the connector together and pull the tube out, protecting the connector with a plastic bag.
It is important to note that you do not need to remove the tank. Instead, you can run the fuel pump until all the fuel is out, then fill it with gas and start the engine.
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Disconnecting the fuel lines
Step 1: Discharge the Fuel Pressure
Start by discharging the fuel pressure. Disconnect the negative battery cable, and then go to the fuse block next to the battery and remove the Circuit Opening Relay. Reconnect the negative battery cable and start the truck until it dies. Turn the ignition switch back to the "ON" position. The Check Engine Light may come on, but you can get it reset for free at certain auto parts stores. Crank the truck to ensure there is no fuel pressure left.
Step 2: Remove Fuel Tank Cap and Drop Tank
Remove the fuel tank cap and reinstall the Circuit Opening Relay. If your Tacoma has the TRD off-road package, remove the skid plate covering the tank. There are two fuel lines connected to the tank. Now, slightly lower the tank to gain access to the fuel filler neck, being careful not to lower it too much to avoid breaking or stretching the wires.
Step 3: Disconnect Fuel Lines
There will be two tubes running up with the filler neck. About halfway up, you should see a hose clamp around the fill tube. Loosen that clamp. Now, remove the breather tube that runs alongside the filler neck. On the third tube, you will find another connector. Disconnect this and protect the connector with a plastic bag to keep it safe from dirt and contaminants.
Step 4: Remove Fuel Tank Bands
Remove the two fuel tank bands. First, remove the two bolts on one side of the bands, and then remove the clip and pin on the other side.
Step 5: Remove Fuel Pump Cover and Disconnect Fuel Pump
Remove the fuel pump cover and disconnect the fuel pump connector. There should be a fuel tank vent hose coming out of the tank, and there will be another connector for it, usually on or near the charcoal canister. Pinch the connector together and pull the tube out, protecting the connector with a plastic bag.
Step 6: Final Checks
Ensure that everything is disconnected from the tank and then carefully drop the tank all the way down. Make sure all the connectors are protected with plastic bags to keep them clean.
It is important to note that disconnecting fuel lines can be dangerous if not done properly, so always refer to a professional repair manual or seek expert advice if you are unsure about any steps.
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Removing the fuel tank
To remove the fuel tank from a 2006 Toyota Tacoma 4x4 Double Cab, you must first discharge the fuel pressure. Disconnect the negative battery cable, then go into the fuse block and remove the Circuit Opening Relay. Reconnect the negative battery cable and start the truck until it dies. Crank the truck to ensure there is no fuel pressure left in it.
Next, remove the fuel tank cap and reinstall the Circuit Opening Relay. Disconnect the negative battery cable again. If you have the TRD off-road package, remove the skid plate that covers the tank. There are two fuel lines that go to the tank: the main line and the return line. Remove the clamp that holds them together. Pinch the sides of the connectors and pull the lines apart. Do not use any tools, as you do not want to damage the connectors. Protect the connectors with a plastic bag.
There should be two tubes running up the filler neck. Loosen the hose clamp around the fill tube and remove the breather tube. Disconnect the connector on the third tube and protect it with a plastic bag. Remove the two fuel tank bands by first removing the two bolts on one side of the bands, then the clip and pin on the other side.
Lower the tank slightly to remove the fuel filler neck, being careful not to lower it too far and break or stretch the wires. Remove the fuel pump cover and disconnect the fuel pump connector. There should be one more tube coming out of the tank, the fuel tank vent hose, with another connector on or near the charcoal canister. Pinch the connector together and pull the tube out, protecting it with a plastic. Ensure everything is disconnected from the tank, then drop the tank down.
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Disconnecting the fuel filter
Step 1: Discharge the Fuel Pressure
Before beginning any work on the fuel system, it is essential to discharge the fuel pressure. Start by disconnecting the negative battery cable. Then, access the fuse block next to the battery and remove the Circuit Opening Relay. Reconnect the negative battery cable and start the truck until it dies; turn the ignition switch back to the "ON" position. The engine may not start, but this step ensures any remaining fuel pressure is released.
Step 2: Prepare for Fuel Filter Access
You will need to access the fuel filter, which is typically located near the fuel tank. If your 2006 Tacoma has the TRD off-road package, start by removing the skid plate that covers the tank.
Step 3: Disconnect the Fuel Lines
Now, you will need to disconnect the fuel lines from the fuel filter. The Toyota FSM (Factory Service Manual) recommends disconnecting the fuel pump and running the truck until the engine stalls due to a lack of fuel. This step releases pressure in the fuel lines before disconnecting them. However, some people find this step unnecessary and instead carefully disconnect the lines from the filter, allowing the fuel to leak into a catch basin. Use a 14mm flare nut wrench on the fuel line nut and a 19mm open-end wrench to provide back pressure on the fuel filter. Loosen the flare nuts securing the fuel lines to the fuel filter, but do not remove them completely.
Step 4: Remove the Fuel Filter
With the fuel lines loosened, you can now remove the fuel filter itself. Using a 10mm socket, remove the nuts securing the fuel filter to the truck. Be cautious, as the fuel lines should still be attached to the filter. Once the filter is free, carefully back the flare nuts out of the fuel filter, and the filter should come out of the lines.
Step 5: Install the New Fuel Filter
To install the new fuel filter, follow these steps in reverse. Ensure the new filter is oriented the same way as the old one. Insert the rear fuel line into the back of the new fuel filter, then insert the front line. Start threading the flare nuts with your fingers, tightening them until they are finger-tight. You may need to wiggle the filter and lines to get the correct thread alignment. Be careful not to cross-thread the connections. Finally, use a 10mm socket to replace the nuts that secure the fuel lines to the truck.
Remember to work safely and refer to the Toyota Tacoma Factory Service Manual for detailed instructions specific to your vehicle.
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Disconnecting the fuel pump connector
Firstly, it is important to discharge the fuel pressure. Start by disconnecting the negative battery cable and accessing the fuse block next to the battery. Remove the Circuit Opening Relay, then reconnect the negative battery cable and start the truck until it dies. Turn the ignition switch back to the 'ON' position. At this point, you may see a 'Check Engine' light, which can be reset for free at certain auto parts stores. Crank the truck to ensure there is no fuel pressure left.
Next, remove the fuel tank cap and reinstall the Circuit Opening Relay. Disconnect the negative battery cable again. Now, remove the two fuel tank bands. First, take out the two bolts on one side of the bands, and then remove the clip and pin on the other side. Lower the tank slightly to access the fuel filler neck, being careful not to lower it too much to avoid breaking or stretching the wires.
At this stage, you should remove the fuel pump cover. The fuel pump connector is typically located on the top of the tank, near the front, just in front of the fuel tank filler neck. You can use your hand or a pair of 90-degree needle-nose pliers to depress the clip holding the connector to the tank. The tab you need to depress faces the right (passenger) side of the truck. With the connector clip depressed, separate the two halves of the connector. You should now be able to disconnect the fuel pump connector.
It is important to note that you should not use any tools unless necessary, as you do not want to damage the connectors. Additionally, it is recommended to protect the connectors with plastic bags to keep them free from dirt and contaminants. Make sure everything is disconnected before lowering the tank completely.
If you are replacing the fuel filter, it is recommended to disconnect the fuel pump and run the truck until the engine stalls due to a lack of fuel. This step releases the pressure in the fuel lines before disconnection. Alternatively, you can carefully disconnect the lines and allow the fuel to leak into a catch basin.
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