OEM 2003 Cadillac DeVille Fuel Injector

2003 Cadillac DeVille Parts Questions & Experts Answers

• Q: How to service and repair a fuel injector on 2003 Cadillac DeVille?

  A: Service and repair of the Fuel Injector begins with Fuel Rail removal followed by pushing the locking tab inward to separate the Fuel Injector. The o-ring service requires removing both the upper and lower seals on the injector o-ring followed by their disposal. Keep the injector o-ring seals out of use. When installing new o-rings pay attention to its proper placement to prevent fuel leaks and fire dangers and personal injuries; place the blue o-ring above the black o-ring although both rings share the same dimension because they differ in substance composition. Order replacement fuel injectors using their proper part number along with replacing the o-rings whenever servicing the injectors to avoid vacuum leaks and driveability issues. Apply engine oil to both the new upper and lower o-rings after which you should mount them on the Fuel Injector followed by reinstallation of the Fuel Injector onto the Fuel Rail until you restore the Fuel Rail to its original position.