MotorVac CarbonClean System II LE-1 - Manual (Page 22)

Overview
1998 MotorVac Technologies, xxi
Throttle Body Injection (TBI) Cleaning Procedure
Follow these steps to circulate the cleaning mixture through the TBI unit to clean the throttle body,
injector screens, and pressure regulator.
1. Verify that TBI 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 for 10 minutes.
4.
Press and hold the Start/Run switch.
5. Turn
the Pressure Adjust regulator clockwise until closed. This will clean the TBI unit and
filter the particles through the LE-1’s filtering system.
6. Release the Start/Run switch. 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 without vacuum assist when the engine is at normal operating
temperature.
• NOTE: By turning the Pressure Adjust regulator in and out and “PULSING” the
mixture from time to time, the cleaning process will be enhanced in this mode.
7. After the 10 minutes has expired adjust Timer knob for an additional 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.
10.
When the run time expires, the cleaning is complete. The unit will automatically shut off and the
LE-1’s alarm will sound.
11.
Turn OFF the vehicle's ignition.
12.
Turn the Pressure Adjust regulator counterclockwise on the unit to open it and release residual
pressure.