Diamante V6-3.5L SOHC (2003)
Fuel Pressure: Testing and Inspection
FUEL PRESSURE TEST
1. Release residual pressure from the fuel line to prevent fuel spray.
2. Disconnect the fuel high pressure hose at the fuel rail side.
CAUTION: Cover the hose connection with rags to prevent splash of fuel that could be caused by some residual pressure in the fuel pipe line.
3. Remove the union joint and bolt from the special tool (adapter hose MD998709) and instead attach the special tool (hose adapter MD998742) to
the adapter hose.
4. Install a fuel pressure gauge on the adapter hose that was set up in step 3.
Use a suitable O-ring or gasket between the fuel pressure gauge and the special tool so as to seal in order to prevent fuel leakage at this time.
5. Install the special tool, which was assembled in steps 3 and 4 between the fuel rail and the high pressure hose.
6. Use the scan tool to operate the fuel pump. Check the connections between the fuel pressure gauge and the special tool for leaks.
7. Start the engine and run at idle.
