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.
1993 Ford Probe Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Fuel Injector Leakage Test
- Install Fuel Injector Tester/Cleaner (113-00001A). Clean injectors according to tester/cleaner manufacturer's instructions. After injectors are cleaned, check for fuel system pressure loss. On 1.8L and 2.0L A/T, if pressure loss is observed, remove injectors and individually check (bench test) injector leakage rate. Maximum injector leakage rate is one drop per minute. Replace injector if maximum leakage rate is exceeded.
- On 2.5L, fuel injectors are side inject type and cannot be bench tested. Disconnect fuel rail from intake manifold, leaving fuel hoses connected. Using jumper wire, connect fuel pump terminal to ground terminal to activate fuel pump. See Figure. Turn ignition on for 10 seconds. Maximum injector leakage rate is one drop per minute. Replace injector if maximum leakage rate is exceeded.
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.
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