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.
Fuel Injectors
A fuel rail links the fuel pressure regulator with the fuel injectors. Each cylinder is provided with a solenoid-operated injector which sprays fuel toward back of each intake valve. Each injector is energized through the ignition coil and grounded through the ECU to complete the circuit.
Each injector is linked to a resistor to reduce operating voltage to 3 volts and to protect injectors from power surges. Resistors are located in a single unit mounted on right side of firewall.
The ECU controls the length of time each injector is open. The "OPEN" time of the injector governs the amount of fuel delivered. The injectors deliver 1/2 the amount of fuel required each crankshaft revolution.
Use the Manual With the Right Hardware
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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.