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Rex Leach Posted on Apr 11, 2019
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How to change fuel injectors on 97 Toyota Tacoma 4.0

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Anna Houston

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  • Posted on Apr 11, 2019
Anna Houston
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The Toyota Tacoma has a fuel injector that mixes fuel with air. This technology almost completely replaced in the late 1980s and its programmable firmware allows the same hardware to be used with different fuels. A fuel injector is only a nozzle and a valve; it still requires a pump to inject the fuel into the engine.

  • Determine which fuel injector your Toyota Tacoma will need. This depends not only on the make and model, but also the engine size. Models made before 2005 may have a 2.4L, 2.7L or 3.4L engine. The current version may have a 2.7L or 4.0L engine.
  • Relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench. Remove the engine under cover subassembly and drain the engine coolant. Detach the intake air connector and disconnect the throttle body motor assembly with a socket wrench.
  • Disconnect the fuel lines and remove the fuel pressure pulsation damper assembly with a socket wrench. Unplug the electrical connectors for the fuel and vacuum switching valve. Remove the engine wiring harness clamp and the air conditioning compressor clutch connector with a socket wrench.
  • Remove the two fuel rail mounting bolts with a socket wrench and lift out the fuel rail with the injectors still attached. Pull out the fuel injectors and discard the old gaskets.
  • Use new gaskets and install the new fuel injectors by reversing the removal procedure.
  • Fill the coolant reservoir with coolant of the proper grade and type. Start the engine and check for fuel leaks.
for the more details visit the link:
https://itstillruns.com/how-to-replace-fuel-injectors-in-toyota-cars-10152.html#how-to-replace-a-fuel-injector-in-a-toyota-tacoma

5 Related Answers

Molson02536

Harvey N Tawatao

  • 3854 Answers
  • Posted on May 04, 2009

SOURCE: Can't find the fuel filter on 2004 toyota tacoma 4 cyl 4x4

With a 2.7 liter engine it is located under the intake manifold on the left side of the motor mounted to the engine block. It can be seen through the driver's side wheel well. 
Good luck and hope this helps.

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Anonymous

  • 125 Answers
  • Posted on May 04, 2009

SOURCE: Can't find the fuel filter on 2004 toyota tacoma 4 cyl 4x4

look under the truck

ourhowse

Dar

  • 2007 Answers
  • Posted on Jul 26, 2009

SOURCE: LOCATION OF FUEL FILTER 2005 TOYOTA TACOMA 2.7 4 CYL


Fuel filter is in the fuel pump
module assy. in the fuel tank for both V6 and I-4 models with no recommended service interval.

Anonymous

  • 37 Answers
  • Posted on Jul 25, 2010

SOURCE: replacing front struts on a 2007 toyota tacoma

REALLY HARD PROJECT, TAKE IT TO SEARS, IT WILL ALSO NEED FRONT ALLIGNMENT

brian soufane

  • 693 Answers
  • Posted on Feb 18, 2012

SOURCE: How can I change fuel injectors on a Toyota Tacoma

The Toyota Tacoma has a fuel injector that mixes fuel with air. This technology almost completely replaced carburetors in the late 1980s and its programmable firmware allows the same hardware to be used with different fuels. A fuel injector is only a nozzle and a valve; it still requires a pump to inject the fuel into the engine.

    • 1 Determine which fuel injector your Toyota Tacoma will need. This depends not only on the make and model, but also the engine size. Models made before 2005 may have a 2.4L, 2.7L or 3.4L engine. The current version may have a 2.7L or 4.0L engine.
    • 2 Relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench. Remove the engine under cover subassembly and drain the engine coolant. Detach the intake air connector and disconnect the throttle body motor assembly with a socket wrench.
    • 3 Disconnect the fuel lines and remove the fuel pressure pulsation damper assembly with a socket wrench. Unplug the electrical connectors for the fuel and vacuum switching valve. Remove the engine wiring harness clamp and the air conditioning compressor clutch connector with a socket wrench.
    • 4 Remove the two fuel rail mounting bolts with a socket wrench and lift out the fuel rail with the injectors still attached. Pull out the fuel injectors and discard the old gaskets.
    • 5 Use new gaskets and install the new fuel injectors by reversing the removal procedure.
    • 6 Fill the coolant reservoir with coolant of the proper grade and type. Start the engine and check for fuel leaks.

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The Toyota Tacoma has a fuel injector that mixes fuel with air. This technology almost completely replaced carburetors in the late 1980s and its programmable firmware allows the same hardware to be used with different fuels. A fuel injector is only a nozzle and a valve; it still requires a pump to inject the fuel into the engine.
    • 1 Determine which fuel injector your Toyota Tacoma will need. This depends not only on the make and model, but also the engine size. Models made before 2005 may have a 2.4L, 2.7L or 3.4L engine. The current version may have a 2.7L or 4.0L engine.
    • 2 Relieve the fuel system pressure and disconnect the negative battery cable with a socket wrench. Remove the engine under cover subassembly and drain the engine coolant. Detach the intake air connector and disconnect the throttle body motor assembly with a socket wrench.
    • 3 Disconnect the fuel lines and remove the fuel pressure pulsation damper assembly with a socket wrench. Unplug the electrical connectors for the fuel and vacuum switching valve. Remove the engine wiring harness clamp and the air conditioning compressor clutch connector with a socket wrench.
    • 4 Remove the two fuel rail mounting bolts with a socket wrench and lift out the fuel rail with the injectors still attached. Pull out the fuel injectors and discard the old gaskets.
    • 5 Use new gaskets and install the new fuel injectors by reversing the removal procedure.
    • 6 Fill the coolant reservoir with coolant of the proper grade and type. Start the engine and check for fuel leaks.
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I have 97 toyota tacoma that has engine hesitation. I replaced plugs, wire and rot cap but no change.

Change your fuel filter and run a good fuel system treatment through with your next tankful of fuel. (STP/Gumout are both good ones)
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Injectors can go "bad" in a couple of different ways; all they are is an electromagneticaly controlled nozzle. When the ECU "fires" the injector, it pulses a ground circuit for 4-8 milliseconds, the electromagnet powers up, the valve at the bottom of the injector opens, and the fuel shoots out, under pressure. The wire can be bad/chafed/corodded/ The electromagnet may be weak. The nozzle may be stuck. Lots of things. But, to put in an injector for a number 4 cylinder misfire (p-0304 code) would be one of the last things that I would do.
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#4 cyl misfires/code 304

P-0304 indicates number 4 cylinder misfire. Are you using Toyota parts dept spark plugs? More often than not, non-toyota plugs make the v-6s run poor, right out of the box....
Try this:With the engine running, pull the connector wire off of the #4 injector. Note to see if there is any change with the idle quality. No change? You may have a bad injector.
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