Carbon MCS-352, Service Manual

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Throttle Body Injection (TBI) Cleaning Procedure
WARNING: BEFORE BEGINNING THE RAIL-FLUSH PROCEDURE IT IS IMPORTANT
TO TEST THE VEHICLE FOR INJECTOR LEAKDOWN. IF AN INJECTOR IS LEAKING
IT IS POSSIBLE TO DAMAGE THE ENGINE DUE TO “HYDROLOCK’. (LIQUID
FILLING THE CYLINDER). IF THE VEHICLE HAS INJECTOR LEAKAGE DO NOT DO
THE RAIL FLUSH BUT PROCEDE DIRECTLY TO THE ENGINE CLEANING PROCESS.
RETEST FOR LEAKDOWN AFTER THE CLEANING PROCESS IS COMPLETED.
RAIL FLUSH 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 1-10
above have been completed before continuing.
2.
Refer to the vehicle's service manual for the manufacturer's recommended pressure.
3.
Adjust
TIMER
knob for 10 minutes. Press the
ON/OFF
switch on .
4.
Press and hold the
START/RUN
switch until pressure builds.
5.
Turn the
Gasoline (Petrol) PRESSURE REGULATOR
clockwise until closed. While in the
recirculating mode, the TBI unit is being cleaned, and the particles are filtered through the
unit’s filter.
6. Check all connections for leaks.
•
M
ake 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 Gasoline (Petrol) PRESSURE 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 alarm will sound. Press off the
ON/OFF
switch.
11. Turn OFF the vehicle's ignition.