Question 1

How to replace the Fuel Injection Fuel Rail Assembly for Bank 1 on Cadillac CTS?

Accepted Answer

A technician must first drain the fuel system pressure before starting the replacement of bank 1 fuel injection Fuel Rail assembly. First break away the cross vehicle brace followed by removal of the fuel pipe shield and then disconnect the Intake Manifold. After discarding the high pressure fuel pipe you should proceed to remove the Fuel Rail crossover pipe that needs disposal. Start by removing the Fuel Rail insulation foam material and disconnect the electrical connector of the Fuel Pressure Sensor before cutting off the wire harness retention straps. You should dispose of both the direct Fuel Injector hold down clamps because a direct Fuel Injector rebuild becomes necessary after removal from the Fuel Rail or cylinder head. Rebuild the fuel injectors at the end of Fuel Rail removal. Find a spot for the reconstructed direct fuel injectors in the cylinder heads before fastening them with novel direct injector hold down clamps. New fuel rails require a silicon-free engine oil lubrication with gm p/n 12345610 (Canadian P/N 9931930) or equivalent for the Fuel Injector cups followed by careful placement with the front mounted over the front injector and the rear section lowered. Begin with the outside Fuel Rail bolts then move to the interior ones before finishing with a hand-tightening process. Begin by tightening the bank 1 Fuel Rail bolts to 12 nm during the first pass then complete by final tightening at 23 nm. A new Fuel Rail crossover pipe should be installed together with a new high pressure fuel pipe. Install the high pressure fuel sensor using proper electrical wiring direction to prevent damage. The Fuel Injector wiring harness electrical connector needs to connect with all components including fuel injectors and Fuel Rail and Fuel Pressure Sensor. A correct leak inspection process involves waiting two seconds with ignition on and ten seconds without ignition for checking fuel system leakage. Follow the procedure by installing foam insulators on fuel rails, then put back the Intake Manifold, fuel pipe shield, low side fuel pressure service port cap before installing the fuel tank cap and cross vehicle brace.

Question 2

How to replace the fuel rail assembly on 4.8L, 5.3L, and 6.0L engines on Cadillac Escalade?

Accepted Answer

Before starting Fuel Rail assembly replacement on engines with 4.8l, 5.3l and 6.0l the fuel system pressure must be released. Start by removing the wire harness bracket nut and then detach both the evaporative emission (EVAP) purge solenoid electrical connector and generator electrical connector. The replacement process begins by cutting the stormwater from the maniflood absolute pressure sensor and Knock Sensor alongside disconnecting the Knock Sensor harness connector on the Intake Manifold and connector position assurance lock. The primary engine operation connects must be separated along with fuel injector wires on both sides. Additionally, all Fuel Rail harness clips need removal. Place the engine wire harness aside first while marking fuel injector connectors for reinstallation. Then use the cpa retainer to disconnect each fuel injector electrical connector by pulling up the retainer then pushing the tab to separate the connector. The maintenance process begins by extracting the pcv hose and detaching both fuel supply and return tubing from the Fuel Rail and afterward removing the vacuum hose of the fuel pressure regulator. Separate the Fuel Rail bolts before gently removing the Fuel Rail to prevent terminal and tip harm on injector electrical connectors. Use caps to seal off fittings and seal the holes while protecting against contaminants. A spray-based engine cleaner is acceptable for brushing the Fuel Rail yet submersion should be avoided. To examine the fuel injectors remove their lower o-ring seals from each injector and then discard them. New fuel injector lower o-ring seals require engine oil lubrication before their installation onto each injector. Apply gm p/n 12345382 threadlock to Fuel Rail bolts at their threads before installing the bolts which should be tightened to 10 n.m (89 lb in) torque. The fuel pressure regulator vacuum hose and fuel feed and return pipes and pcv hose require reattachment during this step. Secure the fuel injector electrical connectors properly while checking the correct sequence and place the engine wire harness in its position. Reconnect the main coil then the fuel injectors before installing the harness clips to the Fuel Rail while holding cpa retainers. After reattaching the MAP Sensor connect the Knock Sensor and next install the Knock Sensor harness connector onto the Intake Manifold while also connecting the evap purge solenoid electrical connector with the generator electrical connector. The last installation task includes installing the wire harness bracket nut while tightening it to 5 n.m (44 lb in), followed by fuel fill cap tightening and negative Battery Cable reconnection and a leak inspection through a sequence of turning on the ignition with engine off for 2 seconds, then turning off for 10 seconds before another ignition on check for fuel leaks.

OEM Cadillac Fuel Rail

64 Fuel Rails found

Cadillac Fuel Rail Part Number: 97361353

Cadillac Fuel Rail Part Number: 12598329

Cadillac Fuel Rail Part Number: 12621668

Cadillac Fuel Rail Part Number: 40009114

Cadillac Fuel Rail Part Number: 12709433

Cadillac Fuel Rail Part Number: 12706270

Cadillac Fuel Rail Part Number: 17110851

Cadillac Fuel Rail Part Number: 12688001

Cadillac Fuel Rail Part Number: 12707883

Cadillac Fuel Rail Part Number: 12709434

Cadillac Fuel Rail Part Number: 12701658

Cadillac Fuel Rail Part Number: 55505909

Cadillac Fuel Rail Part Number: 12719353

Cadillac Fuel Rail Part Number: 55570149

Cadillac Fuel Rail Part Number: 55486887

Cadillac Fuel Rail Part Number: 12662991

Cadillac Fuel Rail Part Number: 12697911

Cadillac Fuel Rail Part Number: 12706269

Cadillac Fuel Rail Part Number: 12719352

Cadillac Fuel Rail Part Number: 17113696

Cadillac Fuel Rail

Cadillac Fuel Rail Parts and Q&A

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