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 MANUALSTOYOTA2004CELICA GT, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 187 (ENGINE CONTROLS - SYSTEM & COMPONENT TESTING)FUEL SYSTEMSFUEL CONTROLFUEL INJECTOR VOLUME
2004 Toyota Celica GT, Standard
Fuel Injector Volume
2004 Toyota Celica GT, StandardSECTION Fuel Injector Volume
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.
CAUTION:
Use care when disconnecting fuel inlet hose from end of fuel filter, as some residual fuel pressure may still exist in fuel system.
- To check fuel injector volume, remove fuel injector. See REMOVAL & INSTALLATION - GX470 article. Obtain a new fuel main Hose (No. 23271-50190) and take out fuel tube connector from hose. Install fuel tube connector to SST (09268-41047) Hose (95336-08070). Connect tube connect and fuel pipe. See Fig 1.
- Remove fuel pressure regulator from delivery pipe. Install NEW "O" ring to fuel inlet of pressure regulator. Connect SST hose to fuel inlet of pressure regulator with another SST Union (09268-41091) and 2 bolts. Tighten bolts to 66 INCH lbs. (7.5 N.m). Connect fuel return hose to fuel outlet of pressure regulator. See Fig 2.
- Install "O" ring to injector. Connect special tools Union (09268-4110) and Hose (95336-08070) to injector and hold injector and union with SST Clamp (09268-41300). See Fig 3.
- Place fuel injector into a clean graduated container. Place vinyl tube on end of fuel injector to prevent fuel spillage. Connect scan tool to Data Link Connector (DLC) No. 3. See Fig 4. Turn ignition on. Turn scan tool on. Select ACTIVE TEST MODE on scan tool. Using scan tool manufacturer's instructions, activate fuel pump.
- Connect SST wire (09842-30070) to fuel injector and battery for 15 seconds. See Fig 5. Measure fuel injector volume. Test each fuel injector 2-3 times. Replace fuel injector if fuel injector volume is not within specification. See FUEL INJECTOR VOLUME SPECIFICATIONS table. Ensure difference between fuel injector volume on all fuel injectors is within specification.
- Disconnect fuel injector tester. Ensure fuel leakage from end of fuel injector does not exceed one drop within 12 minutes. Replace fuel injector if leakage exceeds specification. Remove test equipment.
NOTE:
Fuel pump may be operated without scan tool by removing circuit opening relay and, using a service wire, connect terminals No. 3 and 5 of relay block. See Figure.
FUEL INJECTOR VOLUME SPECIFICATIONS
| Application | (1) Cu. In. (cc) | ||
|---|---|---|---|
| Volume | 3.4-4.2 (56-69) | ||
| Maximum Difference Between Fuel Injectors | .8 (13) | ||
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RENDER: 1.0x
NO RELATED
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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.