OEM 2001 Cadillac DeVille Fuel Injector

2001 Cadillac DeVille Parts Questions & Experts Answers

• Q: How to replace a fuel injector and ensure proper installation of O-rings on 2001 Cadillac DeVille?

  A: Beginning the Fuel Injector replacement requires elimination of the Fuel Rail followed by shifting the Fuel Rail locking tab toward its central position to remove the Fuel Injector. To proceed with the Fuel Injector installation you must first remove the upper o-ring and then lower o-ring before discarding their seals. Place the blue-colored o-ring on top when installing new o-rings because the alignment determines fuel leak prevention. Replacements should use the proper part number for fuel injectors and o-rings need replacement any time during injector maintenance to prevent driveability concerns from vacuum leaks. Use clean engine oil to lubricate both the upper o-ring alongside the lower o-ring before installing them onto the Fuel Injector before placing the injector back on the Fuel Rail for reinstalling the rail.