MAHLE RTI ESX-2 - Manual (Page 24)

Page 23
Vehicle Diagnostics
Fuel System Pressure Test - PFI, TBI, CIS, and Carburetors
1. Verify that Steps 1-9 from the appropriate fuel system setup have been completed.
2. Verify that the engine is running and check all connections for leaks.
3. Make a note of the fuel pressure reading from the ESX Fuel Pressure gauge. This is
the vehicle running pressure. If the pressure is erratic or the vehicle is slow to reach
maximum pressure, the vehicle fuel filter may be clogged or its fuel pump may be
weak.
4. Return to the appropriate Fuel System Cleaning procedure to continue the cleaning
process. Otherwise, continue with the steps below.
5. Turn off the vehicle.
6. Close the valve on the Tee adapter and use a shop rag at all connection points before
disconnecting. Disconnect the battery leads, hoses, and adapters. Reconnect all of the
vehicle fuel lines and reinstall the vehicle fuel cap.
Fuel Volume Test - PFI, TBI, CIS, and Carburetors
1. Verify that Steps 1-9 from the appropriate fuel system setup have been completed.
2. Verify that the engine is running and check all connections for leaks.
3. Press and hold the Fill/Purge button on the Keypad until the Fuel Level window
indicates an increase of 1/4 in the ESX fuel tank.
If the vehicle stalls, turn the valve on
the Tee adapter 1/8 turn clockwise. Restart the vehicle and slowly open the valve, by
turning counterclockwise, until the engine starts to stutter. Ease the valve back until
the engine smooths and continue filling. If vehicle repeatedly stalls repeat this step
until ESX fuel tank is 1/4 full. The fuel volume flow is sufficient if a 1/4 tank of fuel
appears in the Fuel Level window within 15-20 seconds.
4. Release the Fill/Purge button. Note: If proper fuel level is not reached within the 15 -
20 seconds, this could indicate a blocked or clogged fuel filter or fuel line on the
vehicle.
5. Return to the appropriate Fuel System Cleaning procedure to continue the cleaning
process. Otherwise, continue with the steps below.
6. Turn off the vehicle.
7. Close the valve on the Tee adapter and use a shop rag at all connection points before
disconnecting. Disconnect the battery leads, hoses, and adapters. Reconnect all of the
vehicle fuel lines and reinstall the vehicle fuel cap.