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.
1985 Merkur XR4Ti AutomaticFACTORY OEM SERVICE PROCEDURE
High Pressure Fuel Pump Feed Circuit Test
- Separate high pressure pump wiring connector and connect test light from ground to Black/Red wire in harness side of wiring connector. Turn ignition switch to "RUN" position. See Figure .
- If test light comes on for about one second, test is okay. Go to HIGH PRESSURE FUEL PUMP OPERATIONAL TEST . If light does not come on, repair open in feed circuit.
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.