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 1-18
above have been completed before continuing.
•
At this point, refer to appropriate Intake System Cleaning Procedure section for proper intake
cleaning, and Vacuum gauge connections in the vehicle diagnostics chapter.
2.
Refer to the vehicle's service manual for the manufacturer's recommended PSI.
3.
Press and hold the
Start
button.
4.
Close
the
Pressure Adjust
regulator clockwise until the
Fuel Pressure
gauge on the
unit displays the vehicles operating pressure and the
Up Arrow
LED stays illuminated
without flashing. This will clean the CIS system and filter the contaminants through
the unit’s filtering system.
5.
Release
the
Start
button and continue to turn the
Pressure Adjust
regulator
clockwise until it is completely closed.
•
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.
CAUTION:
Do not open or move sensor plate / air door on the
engine when the fuel distributor is pressurized. The CIS
system will spray fuel into the engine while it is not
running.
6.
Press
the
button to increases the time, or the
▬
button to decreases the time until
the
Time
LED displays 10 minutes.
7.
After the 10 minutes has expired on the
Time
LED display, press the
Start
button
until the pressure rises to the previous system pressure, and release.
