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

WARNING: This page is about a different car, the 2011 RAM Pickup and 2011 RAM Cab & Chassis. 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 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) (typical illustration). 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.