Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 247 (ENGINE CONTROLS REMOVAL & INSTALLATION)FUEL SYSTEMFUEL INJECTOR ASSEMBLYINSTALLATION
2004 Toyota Matrix XR, FWD, Standard
Fuel Injector Assembly: Installation
2004 Toyota Matrix XR, FWD, StandardSECTION Installation
WARNING: This page is about a different car, the 2003 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
- Install a NEW grommet and an insulator to injector. Check for dirt or damage in groove for "O" ring of injector. Apply a little gasoline to NEW "O" ring and install to injector. Install injector to delivery pipe, rotating injector both ways. Check that injector can turn smoothly. If injector cannot turn smoothly, "O" ring might be caught on something.
- Install injector to delivery pipe and lower intake manifold as shown in figure. See Fig 1. Turn injector both ways approximately 45 degrees. Insert a spacer between delivery pipe and intake manifold. Install delivery pipe subassemblies with injector and tighten 2 nuts to specification. See TORQUE SPECIFICATIONS .
- Insert 2 NEW gaskets and install fuel main hose with fuel pressure pulsation damper. See Figure. Tighten to specification. See TORQUE SPECIFICATIONS .
- Install vacuum switching valve assembly No. 1. Tighten to specification. See TORQUE SPECIFICATIONS .
- Install fuel pipe sub-assembly No. 3. Tighten to specification. See TORQUE SPECIFICATIONS .
- Install NEW gaskets between fuel pipe sub-assembly No. 1 and fuel delivery pipe. Install fuel pipe sub-assembly No. 1 with union bolt on each part. Tighten bolts to specification. See TORQUE SPECIFICATIONS .
- Install air cleaner hose assembly. Check for fuel leaks. Install engine cover and tighten to specification. See TORQUE SPECIFICATIONS .
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.