Your Lincoln fuel injectors should be serviced at least every 40,000 miles in order to maintain the high performance standards that Lincoln vehicles have been famous for since the earliest years of this historic automotive name. However, this is not a one-size-fits all service recommendation. While Lincoln fuel injectors are designed to provide many miles of reliable service, their life span also depends upon individual driving style and conditions. Lincoln fuel injectors perform an important task, serving to control the spray of fuel into the engine by opening and closing in response to changing fuel demands. The moving parts of Lincoln fuel injectors undergo significant wear and tear, the degree of which, in part, relates to driving style, conditions and quality of fuel. Thus, 40,000 is merely an estimate of service time for your Lincoln fuel injectors. To preserve the performance of your Lincoln, you'll need to be alert to other indicators that your Lincoln fuel injectors may need to be changed. Inconsistent start up, particularly if it starts well when the engine is cold, but is difficult to start when the engine is warm, is something to watch out for, as is running well when cold, but turning rough when warm. If you smell fuel when you are inside the car, you'll want to have your Lincoln fuel injectors checked. It's a good idea to visually inspect your Lincoln fuel injectors periodically, looking for signs of fuel leakage on or around the fuel injectors and their seals. Your Lincoln fuel injectors are intricately tied to performance and deserve your time and attention.