MotorVac CarbonClean System II LE-1 - Manual (Page 30)

Overview
1998 MotorVac Technologies, xxix
Continuous Injection System (CIS) Cleaning Procedure
Follow the steps below to circulate the cleaning mixture through the CIS fuel distributor to clean the
pressure regulator and the top portion of the fuel distributor.
1. Verify that CIS Setup Steps 1-11 above have been completed before continuing.
2. Refer to the vehicle's service manual for the manufacturer's recommended PSI.
3. Adjust Time knob for 10 minutes.
4. Press and hold the Start/Run switch.
5.
Turn the Pressure Adjust regulator clockwise until the gauge displays 4 PSI. The pump will
remain on.
6. Release the Start/Run switch and continue to turn the Pressure Adjust regulator clockwise until
it is completely closed. This will clean the CIS fuel distributor and filter particles through the LE-
1’s filtering system.
Check all connections for leaks.
• Make a note of the fuel pressure reading; this is the true opening pressure of the vehicle's
pressure regulator when the engine is at normal operating temperature.
• NOTE: By turning the Pressure Adjust regulator in and out “PULSING” the mixture from
time to time, the cleaning process will be enhanced in this mode.
• If the
“PULSING” is too great, it could stop the engine.
7. After the 10 minutes has expired, adjust time for 30 minutes. (Run time may be adjusted
depending on the condition of the vehicle’s fuel system.)
8. Press the Start/Run switch.
9.
Start the vehicle to begin the fuel system cleaning process.
• When the cleaning process is halfway completed, step on the vehicle’s accelerator quickly
three or four times. Then, maintain RPM at 1500 - 2000 for 30 seconds.
• If the vehicle is equipped with a
Cold Start Injector , you may use a Pulse Tester to energize
the Cold Start Injector a few quick times during the run cycle to clean it.
10. When the run time expires, the cleaning is complete. The unit will automatically shut off and the
LE-1’s alarm will sound.