How do I remove the fuel rail and injectors?

To remove the fuel rail and injectors, start by relieving the fuel system pressure and disconnecting the battery. Then, remove the intake manifold service cover and the air intake duct. On 1999 models, also remove the throttle body and gasket, as well as the throttle body spacer and spacer gasket. Disconnect the fuel supply and return lines from the fuel rail, and on 2005 and earlier models, disconnect the vacuum hose from the fuel pressure regulator. On 2000 and later models, disconnect the PCV fresh air tube. Remove the nut attaching the fuel rail end-point bracket retainer, and disconnect the electrical connectors from the fuel injectors. Remove the nuts securing the coolant pipes to the front fuel rail mounting studs, and then remove the fuel rail and injectors as a single assembly. To remove an injector from the fuel rail, flip up the U-clip retainer and pull out the injector. Finally, remove the old o-rings from the injectors. When installing the injectors, use new o-rings and, on 1999 models, a new gasket for the spacer. Tighten the spacer bolts to the specified torque. Installation is the reverse of removal, and be sure to check for fuel leaks after starting the engine.

Genuine Cadillac Seville Fuel Injector

Gas Injector

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8 Fuel Injectors found

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Cadillac Seville Multiport Fuel Injector Assembly
Part Number: 19244621
$112.73 MSRP: $212.69
You Save: $99.96 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Injector Asm,Multiport Fuel; Fuel Injector Kit, Injector
- Replaces: 17112982
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1991 Cadillac Seville | SEVILLE | 8 Cyl 4.5L, 8 Cyl 4.9L
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Cadillac Seville Multiport Fuel Injector
Part Number: 17091474
$58.91 MSRP: $189.56
You Save: $130.65 (69%)
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Product Specifications
- Other Name: Injector,Multiport Fuel; Injector
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995 Cadillac Seville | 4 DOOR | 8 Cyl 4.6L
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Cadillac Seville Multiport Fuel Injector Assembly
Part Number: 19244622
$131.36 MSRP: $247.83
You Save: $116.47 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Injector Asm,Multiport Fuel; Injector
- Replaces: 17086729
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1991 Cadillac Seville | SEVILLE | 8 Cyl 4.5L, 8 Cyl 4.9L
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Cadillac Seville Multiport Fuel Injector Kit
Part Number: 17121296
$53.04 MSRP: $170.64
You Save: $117.60 (69%)
ADD TO CART
Product Specifications
- Other Name: Injector Kit,Multiport Fuel; Injector
- Replaces: 17090571
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 Cadillac Seville | 4 DOOR
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Cadillac Seville Multiport Fuel Injector Assembly
Part Number: 12559036
Product Specifications
- Other Name: Injector Assembly, Multiport Fuel ; Injector, Fuel Injection; Injector
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2004 Cadillac Seville | DEVILLE, HIGH LUXURY, SEVILLE, SLS, STS, TOURING 4 DOOR | 8 Cyl 4.6L
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Cadillac Seville Fuel Injectors Nozzle Assembly<Split>
Part Number: 22520378
Product Specifications
- Other Name: Nozzle Asm,Fuel Injectors ; Injection Nozzle, Nozzle
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1985 Cadillac Seville | SEVILLE | 8 Cyl 5.7L Diesel
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Cadillac Seville Sequential Multiport Fuel Injector Kit
Part Number: 17121552
Product Specifications
- Other Name: Injector Kit,Sequential Multiport Fuel; Injector
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1999 Cadillac Seville | 4 DOOR, DEVILLE, SLS, STS | 8 Cyl 4.6L
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Cadillac Seville Multiport Fuel Injector Kit
Part Number: 17113140
Product Specifications
- Other Name: Injector Kit,Multiport Fuel ; Injector Kit, Fuel Injection; Injector, Injector Kit
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1993-1994 Cadillac Seville | 4 DOOR, SEVILLE | 8 Cyl 4.6L

Cadillac Seville Fuel Injector Parts Questions & Experts Answers

Multiport Fuel Injector Assembly
12559036
Q: How do I remove the fuel rail and injectors?
A: To remove the fuel rail and injectors, start by relieving the fuel system pressure and disconnecting the battery. Then, remove the intake manifold service cover and the air intake duct. On 1999 models, also remove the Throttle Body and gasket, as well as the throttle body spacer and spacer gasket. Disconnect the fuel supply and return lines from the fuel rail, and on 2005 and earlier models, disconnect the vacuum hose from the fuel pressure regulator. On 2000 and later models, disconnect the PCV fresh air tube. Remove the nut attaching the fuel rail end-point bracket retainer, and disconnect the electrical connectors from the fuel injectors. Remove the nuts securing the coolant pipes to the front fuel rail mounting studs, and then remove the fuel rail and injectors as a single assembly. To remove an injector from the fuel rail, flip up the U-clip retainer and pull out the injector. Finally, remove the old o-rings from the injectors. When installing the injectors, use new o-rings and, on 1999 models, a new gasket for the spacer. Tighten the spacer bolts to the specified torque. Installation is the reverse of removal, and be sure to check for fuel leaks after starting the engine.

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