Diagnosis And Testing - High - Pressure Fuel Line Leaks: Notes

WARNING: This page is about a different car, the 2014 RAM 3500 HD and 2014 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Typical Test For Leaks Using Cardboard

Courtesy of CHRYSLER GROUP, LLC

1 - HIGH-PRESSURE LINE

2 - CARDBOARD

3 - TYPICAL HIGH-PRESSURE FITTING

High-pressure fuel line leaks can cause starting problems and poor engine performance.

WARNING:

Due to extreme fuel pressures of up to 180, 000 kPa (26, 107 psi), use extreme caution when inspecting for high-pressure fuel leaks. Do not get your hand or a finger near a suspected leak. Inspect for high-pressure fuel leaks with a sheet of cardboard (2) . High fuel injection pressure can cause personal injury if contact is made with the skin.

Start the engine. Move the cardboard (2) over the suspected high-pressure fuel line leak, and check for fuel spray onto the cardboard. If line is leaking, retorque line while engine is shutdown. Replace damaged, restricted or leaking high-pressure fuel lines with the correct replacement line.

CAUTION:

The high-pressure fuel lines must be clamped securely in place in the brace. The lines cannot contact each other or other components. Do not attempt to weld high-pressure fuel lines or to repair lines that are damaged. Only use the recommended lines when replacement of high-pressure fuel line is necessary.