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.
1992 Porsche 911 AmericaFACTORY OEM SERVICE PROCEDURE
Fuel Injectors
- Disconnect fuel injector connector. Connect DVOM between ground and terminal No. 2 of fuel injector connector. See Figure . Turn ignition on and check voltage supply to fuel injector. If battery voltage is not indicated, check Red/White wire back to fuse/relay block. See WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section.
- If battery voltage is present, use DVOM to measure resistance across injector terminals. If resistance is not approximately 16 ohms, replace injector. Repeat test for each injector.
Factory Service Tools
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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.