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.
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HOMESERVICE MANUALSMERCURY1998MOUNTAINEER 5.0 P, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 47 (FUEL SYSTEM PRESSURE SPECIFICATIONS)FUEL SYSTEMSFUEL PRESSURE
1998 Mercury Mountaineer 5.0 P, AWD
Fuel Pressure
1998 Mercury Mountaineer 5.0 P, AWDSECTION Fuel Pressure
WARNING: This page does not describe the selected car, but rather 27 other vehicles, including the 1999 Mercury Villager, 1999 Mercury Tracer, 1999 Mercury Sable, 1999 Mercury Mystique, and 1999 Mercury Mountaineer. However, it is still accessible from the selected car via links, so may be relevant.
1999 FUEL PRESSURE SPECIFICATIONS - CARS
| Engine | KOER psi (kg/cm2 ) | KOEO psi (kg/cm2 ) | |||
|---|---|---|---|---|---|
| Continental | 35-45 (2.4-3.1) | 35-55 (2.4-3.8) | |||
| Contour, Cougar & Mystique | |||||
| 2.0L | (1) | 30-45 (2.1-3.2) | |||
| 2.5L | (1) | 45-60 (3.2-4.2) | |||
| Crown Victoria | |||||
| Gasoline | 30-45 (2.1-3.2) | 35-45 (2.4-3.1) | |||
| Natural Gas Vehicle | (1) | 80-120 (5.6-8.4) | |||
| Escort & Tracer | (1) | 35-55 (2.5-3.9) | |||
| Grand Marquis & Town Car | 30-45 (2.1-3.2) | 35-45 (2.4-3.1) | |||
| Mustang | 25-40 (1.7-2.7) | 35-50 (2.4-3.5) | |||
| Sable & Taurus | 26-45 (1.8-3.1 ) | 37-43 (2.5-2.9 ) | |||
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1999 FUEL PRESSURE SPECIFICATIONS - TRUCKS
| Engine | KOER psi (kg/cm2 ) | KOEO psi (kg/cm2 ) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Econoline & Pickup | |||||||||
| Diesel | (1) 30-80 (2.1-5.6) | (2) 30 (2.1) | |||||||
| Gasoline | 28-45 (2.0-3.2) | 35-45 (2.4-3.2) | |||||||
| Natural Gas Vehicle | (3) | 80-120 (5.6-8.4) | |||||||
| Expedition & Navigator | 28-45 (1.9-3.1) | 30-45 (2.1-3.2) | |||||||
| Explorer & Mountaineer | (3) | 57-73 (4.0-5.1) | |||||||
| Ranger | 47-63 (3.2-4.4) | 55-65 (3.9-4.6) | |||||||
| Villager | 30-38 (2.1-2.6) | 37-43 (2.6-3.0) | |||||||
| Windstar | 28-45 (1.9-3.1) | 35-45 (2.4-3.2) | |||||||
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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.