Lisle 10810 Injector Rail Fuel Line Cap Set, 5 pc.

Description Caps Used to Block Off the Fuel Rail During Fuel Pressure Diagnostics in 2003-2022 Cummins, 2001-2022 Duramax, and 2008-2022 Ford Engines. Helps in identification of faulty diesel fuel injectors and used to diagnose engine knock sounds. Install the cap on the fuel rail in the place of the injection line. When the cylinder with the failed injector is capped, the rail pressure will rise and the vehicle will start. Set comes with five different caps. ASIN B0CF2PBNH8 Customer Reviews 4.9 4.9 out of 5 stars (24) 4.9 out of 5 stars Best Sellers Rank #512,956 in Automotive (See Top 100 in Automotive) #1,459 in Automotive Replacement Fuel Injectors Date First Available August 8, 2023