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 Pressure
1993 FUEL PRESSURE SPECIFICATIONS (CARS - GASOLINE)
| Engine | KOER psi (kg/cm2 ) | KOEO psi (kg/cm2 ) |
|---|---|---|
| 1.3L | 25-31 (1.8-2.2) | 64-85 (4.5-6.0) |
| 1.6L | 28-31 (2.0-2.2) | 64-85 (4.5-6.0) |
| 1.8L | 30-37 (2.1-2.6) | 64-85 (4.5-6.0) |
| 2.0L | 37-45 (2.6-3.2) | 64-92 (4.5-6.5) |
| 2.5L | 39-45 (2.8-3.2) | 72-92 (5.1-6.5) |
| 2.3L HSC MFI | 45-60 (3.2-4.2) | 50-60 (3.5-4.2) |
| 3.0L SHO SFI | 28-33 (2.0-2.3) | 30-45 (2.1-3.2) |
| 3.8L SC SFI | 30-40 (2.1-2.8) | 35-40 (2.5-2.8) |
| All Others | 30-45 (2.1-3.2) | 35-40 (2.5-2.8) |
1993 FUEL PRESSURE SPECIFICATIONS (TRUCKS - GASOLINE)
| Engine | KOER psi (kg/cm2 ) | KOEO psi (kg/cm2 ) |
|---|---|---|
| 3.0L | 35-38 (2.5-2.7) | 40-43 (2.8-3.0) |
| 4.9L MFI | 45-60 (3.2-4.2) | 50-60 (3.5-4.2) |
| All Others | 30-45 (2.1-3.2) | 35-45 (2.5-3.2) |
1993 FUEL PRESSURE SPECIFICATIONS (TRUCKS - DIESEL)
| Engine | psi (kg/cm2 ) | ||||||
|---|---|---|---|---|---|---|---|
| 6.6L & 7.8L | |||||||
| At Fuel Filter Inlet | 15-30 (1.05-2.11) | ||||||
| At Fuel Filter Outlet | 15-28 (1.05-1.96) | ||||||
| At Fuel Return Line | 6 (.42) | ||||||
| 7.3L | |||||||
| At Fuel Filter Inlet (1) | 2 (.14) | ||||||
| At Fuel Filter Outlet (2) | 1 (.07) | ||||||
| At Fuel Return Line (2) | 2 (.14) | ||||||
| FD-1060 | |||||||
| Maximum Pressure At Injection Pump | |||||||
| 160 hp | 10 (.70) | ||||||
| Except 160 hp | 25 (1.76) | ||||||
| Transfer Pump Output | |||||||
| 160 hp | 3-7 (.21-.49) | ||||||
| Except 160 hp | 18-28 (1.26-1.96) | ||||||
| FD-1460 | |||||||
| Maximum Pressure At Injection Pump | 25 (1.76) | ||||||
| Transfer Pump Output | 18-28 (1.26-1.96) | ||||||
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1993 FUEL PRESSURE SPECIFICATIONS (LPG)
| Engine | psi (kg/cm2 ) |
|---|---|
| All Models | 1.25-1.5 (.09-.11) |
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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