
After many years of fuel injection "service," I think that some service technicians still misunderstand the process of proper fuel system handling. Much has been said over the years in regard to when and how to perform injector cleaning. Some manufacturers have suggested methods of cleaning while others have issued bulletins to disregard any cleaning at all.
For this reason, I offer the following suggestions on the proper process for injector service on today's vehicles.
To begin, all engines using fuel injection do in fact require some slightly different fuel system maintenance! The normal wear and tear with today's underhood temperatures and changes in gasoline quality suggests some buildup of olefin wax, dirt, water and many other additives. Unique to each engine is an air control design that also may suggest different levels of carbon deposits, such as oil control or just the location of the component or control device itself.
To simplify the approach, I will use the word "service" since the phrase "injector cleaning" is misleading as to the real function needed to maintain the vehicles of today!
Tanner 4x4 Inc. Doin it right since 1974!