How to service and repair the fuel rail on Mercury Grand Marquis?

To maintain the fuel rail, do not put yourself at risk, unscrew the battery and depress the fuel pressure. Disassemble parts, such as throttle body, EGR system, de-wire and de-tube. Take out the fuel rail and injectors, O-rings change. Install with new seals, making sure to tighten all connections and parts.

How to service the fuel rail safely and effectively on Mercury Grand Marquis?

In order to maintain the fuel rail, it is advised to disconnect the battery, release the fuel pressure, and take out the specific components to maintain safety. Disassemble sensors, cables, as well as brackets and strip away the fuel injection manifold and injectors. Apply lubricant to injector pockets, re-fit components and reconnect all including battery and fuel lines.

OEM Mercury Grand Marquis Fuel Rail

Engine Fuel Rail

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4 Fuel Rails found

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Mercury Grand Marquis Fuel Rail Part Number: 5W7Z-9F792-AC
$312.13 MSRP: $458.33
You Save: $146.20 (32%)
Product Specifications
- Other Name: Manifold Assembly - Fuel Supply
- Replaces: 5W7Z-9F792-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2011 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
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Mercury Grand Marquis Fuel Rail Part Number: 3W7Z-9F792-CD
Product Specifications
- Other Name: Manifold Assembly - Fuel
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2004 Mercury Grand Marquis | GS, LS, LSE | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis Fuel Rail Part Number: XW1Z-9F792-AA
Product Specifications
- Other Name: Manifold Assembly - Fuel; Manifold Assembly - Fuel Supply
- Manufacturer Note: Includes fuel pressure regulator
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2000 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
View related parts
Mercury Grand Marquis Fuel Rail Part Number: 1W7Z-9F792-AA
Product Specifications
- Other Name: Manifold Assembly - Fuel; Manifold Assembly - Fuel Supply
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2001-2002 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS

Mercury Grand Marquis Fuel Rail

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Mercury Grand Marquis Fuel Rail Parts and Q&A

Fuel Rail
5W7Z-9F792-AC
Q: How to service and repair the fuel rail on Mercury Grand Marquis?
A: To maintain the fuel rail, do not put yourself at risk, unscrew the battery and depress the fuel pressure. Disassemble parts, such as Throttle Body, EGR system, de-wire and de-tube. Take out the fuel rail and injectors, O-rings change. Install with new seals, making sure to tighten all connections and parts.
Fuel Rail
XW1Z-9F792-AA
Q: How to service the fuel rail safely and effectively on Mercury Grand Marquis?
A: In order to maintain the fuel rail, it is advised to disconnect the battery, release the fuel pressure, and take out the specific components to maintain safety. Disassemble sensors, cables, as well as brackets and strip away the fuel injection manifold and injectors. Apply lubricant to injector pockets, re-fit components and reconnect all including battery and fuel lines.