Remove the fuel pressure relief valve.

If available , run the engine, use INSITE’M electronic service tool fuel pressure override test. Otherwise , run at idle. Place the end of the…

The purpose of this test is to check for a fuel rail pressure relief valve (1) that leaks excessive fuel to the fuel drain (2)…

Check the pressure relief valve for leaks or other damage.  

The fuel rail contains high-pressure fuel from the fuel pump. The fuel pressure relief valve is a cartridge located at the front end of the…

Install the fuel rail on the engine. Hand tighten the fuel rail mounting capscrews. Install the injector supply line(s) that connect the fuel rail to…

Inspect the fuel line connections at the fuel rail for cracks or scratches. Inspect the inlets of the high-pressure lines for damaged sealing surfaces. Check…

Remove the fuel rail mounting capscrews. Remove the fuel rail.  

Check the fuel rail for leaks, loose capscrews, or any other problems.  

The fuel rail contains high pressure fuel from the fuel pump. • Fuel pressure relief valve • Fuel pressure relief valve drain • High pressure…