Noisy injector in GM LLY

blofgren wrote:
I can see these products working with the 6.0L which has injectors actuated by oil pressure, but don’t understand how this would do much with common rail injection. Can you please explain?

Best explained by HSS:

STICTION ELIMINATOR is composed of a safe and effective synthetic cleaner that dissolves the stiction found on oil-wetted components, resulting in a rating of 92% clean in the ASTM D4828 scrub test. A Group V synthetic ester assists in bringing deposits and additives back into solution, reducing friction and lubricating your oil system. Originating as a request by International Truck and Engine for a product that eliminated the performance and warranty issues caused by stiction in the Navistar and Powerstroke Hydraulic Electric Unit Injectors (HEUI injectors), Stiction Eliminator eliminates the sticky friction caused by byproducts of burnt oil, thereby eliminating the hard starting when cold, bucking, missing, chugging and black smoke. Stiction Eliminator restores HEUI injectors back to factory specifications and rejuvenates the engine to optimal performance by restoring the oil flow through the injectors, which corrects injector timing, fuel flow and the spray pattern of injectors. Stiction Eliminator cleans the gum, varnish and stiction while also lubricating everything the oil touches in the engine. Similar to HEUI injectors the same benefits hold true for many other engine components. Stiction can form on many other components as well. Turbocharger bearings operate with tight tolerance and extreme heat (reaching temperatures upwards of 400°F), and are a known victim of stiction buildup. Stiction Eliminator helps reduce spool time while building maximum boost sooner in the RPM range. Stiction Eliminator is an inexpensive preventative measure to avoid stiction problems in the future. Stiction Eliminator was formulated to be left in for the entire duration of your oil’s lifetime. Stiction Eliminator is not a flush that contains harsh solvents which can potentially harm your engine. Whether used to solve an existing problem or as a preventative measure, Stiction Eliminator is guaranteed to clean and protect your engine.