OEM 2001 Buick LeSabre Fuel Injector

2001 Buick LeSabre Fuel Injector Parts and Q&A

• Q: How to replace a fuel injector on 2001 Buick LeSabre?

  A: Start by removing the Fuel Rail onto which you should detach the Fuel Injector retaining clips and extract the fuel injectors. Follow these steps for removing the Fuel Injector upper o-ring together with lower o-ring and o-ring back up while keeping electrical connector pins and nozzles free from damage. You must install the specific Fuel Injector part number and replace upper o-rings that are black while lower ones should be brown because they consist of dissimilar materials. An improper installation of the o-ring back up will create a vacuum leak because it functions as an essential tool for proper positioning of the lower o-ring. Engine oil should be applied to all fresh o-rings before the o-ring back up and lower and upper o-rings get installed onto the Fuel Injector assembly bearing its part number and build date code. The procedure continues with installing the Fuel Injector onto the Fuel Rail while using retaining clips for secure attachment finished by reattaching the Fuel Rail. The replacement of o-rings should happen simultaneously with any maintenance work on fuel injectors to stop the possibility of fuel spreading into engine oil.