Auto Service Professional

OCT 2017

Magazine for the auto service professional

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Page 51 of 77

50 | ASP October 2017 Technical injector bodies and components, with rebuilt injectors tested and verified on a flow bench. Check the air intake e majority of diesel engines are turbo- charged. Turbochargers must be protected against excessive heat, which is one reason the oil changes are so important. e heat generated in the turbo is high and engine oil injected to the turbo bearings is vital. e heat tends to break down the oil and if not changed with proper frequency the oil can cook and coke, reducing lubrication. Another common area to check during any service is the air filter, filter housing and turbo intake. Many light-duty diesel powered trucks are used for commercial applica- tions, many in dirty/dusty environments. In addition, a small percentage of diesel owner "enthusiasts" tend to operate off-road in dusty or muddy conditions. To avoid dirt/grit contaminants from entering the turbo, check air inlets to make sure that the filter and filter housing are kept clean. ■ Each injector is flow tested on a dedicated Power- stroke head and flow bench. The Ford Powerstroke injectors are very ex- pensive units to replace, so rebuilding makes economic sense. A wet ultrasonic cleaner is used to clean multiple injectors and injector compo- nents. Assembly is done in a dedicated injector clean room. Shown here are injectors for the 7.3L Powerstroke engine, but specialty shops are able to rebuild any generation of injectors. This technician at Unlimited Diesel specializes in rebuilding and modifying Ford Powerstroke die- sel fuel injectors. This is a popular and profitable service to consider adding for both daily drivers and performance customers. Example of the direct-injection injector for the Ford 6.4L Powerstroke engine.

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