Table of Contents
Advertisement
Port Fuel Injection (PFI) 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 Port Fuel Injection unit to clean the fuel rail, injector screens, and pressure regulator.
Verify that
1.
PFI Setup Steps 1-10
Refer to the vehicle's service manual for the manufacturer's recommended pressure.
2.
Adjust
3.
TIMER
Press and hold the
4.
Turn the
5.
Gasoline (Petrol)
reads past 4 PSI. The pump will remain on.
GAUGE
Release the
6.
START/RUN
REGULATOR
screens, fuel rail, and pressure regulator while filtering contaminants through the unit's filter.
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
"PULSING"
After the 10 minutes has expired, adjust
7.
depending on the condition of the vehicle's fuel system.)
Press the
8.
START/RUN
9.
Start the vehicle
When the run time expires, the cleaning is complete. The unit will automatically shut off and
10.
the alarm will sound. Press off the
11.
Turn OFF the vehicle's ignition.
above have been completed before continuing.
knob for 10 minutes. Press the
switch.
START/RUN
PRESSURE
switch and continue to turn the
clockwise until it is completely closed. This will clean the PFI unit, injector
Gasoline (Petrol)
the mixture from time to time, the cleaning process will be enchanced.
switch.
to begin the fuel system cleaning process.
ON/OFF
switch on.
ON/OFF
clockwise until the
REGULATOR
Gasoline (Petrol)
PRESSURE
REGULATOR
to 30 minutes. (Run time may be adjusted
TIMER
switch.
PRESSURE
PRESSURE
in and out and
Advertisement
Table of Contents
