4 Pack 14mm M14 Block-Off Fuel Rail Cap Set for Cummins
4 Pack 14mm M14 Block-Off Fuel Rail Cap Set for Cummins
This four-piece set includes 14mm caps with M14 x 1.5 threads. Each cap is made from carbon steel for durability and a long service life. To use them on a diesel common rail fuel system, disconnect one injector line at a time, fit a cap to the rail in its place, and watch for changes in fuel pressure. Increased pressure can point to a faulty injector.
Using more than one cap can be useful, since several injectors returning small amounts of fuel can produce symptoms similar to a single injector with high fuel return. Isolating individual cylinders can also help when tracking down engine knock.
Specifications
- Quantity: 4 caps
- Cap size: 14mm
- Thread size: M14 x 1.5
- Material: Carbon steel
- Fits: Ford 6.7L (2011-2022), Cummins 5.9L (2003-2009), Duramax 6.6L (2001-2005 and 2017-2022)
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