MotorVac Intake Cleaning System Procedures User Manual

Intake Cleaning System Procedures

Port Fuel, Tuned Port and CIS Systems

WARNING:

Extreme care must be taken when performing this
process. Failure to take the necessary precautions
may result in mechanical engine failure.

IMPORTANT:

Wear suitable OSHA approved safety goggles before
starting this or any other MotorVac CarbonClean Service.

1. Warm up vehicle to operating temperature.

2. Shut off vehicle.

3. Fill the ICS container with a MAXIMUM of 4 ounces of MotorVac detergent. ( See page B-10 in

Appendix B for ICS kit breaksown .)

4. Pressurize the container with shop air to a minimum of 80 PSI. Do not exceed 185 PSI.

5. Shake the ICS container to aerate the mixture.

NOTE:

If the ICS container has too much cleaner in it, there may not be
enough air volume to force the cleaner out with sufficient velocity
to contact the intake air plenum walls. Always be sure to
maintain at least 80 pounds of pressure in the ICS container.

6. Be certain that the ICS 30-inch spray tube is free from any kinks or bends.

7. Attach the spray tube to the end of the ICS container.

8. Measure the length of the engine air intake manifold by laying the spray tube outside the manifold.

9. At the throttle plate, grip and hold the tube.

NOTE:

This will be the maximum length that the tube may be inserted into the manifold.

CAUTION:

CIS FUEL SYSTEMS

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.

10. With the engine off and the engine’s air duct removed, open the throttle plate wide open or have someone

hold it open.

11. Insert the ICS spray tube into the manifold up to the point measured in step 8 and 9.

12. While holding the container upright, press and hold the nozzle of the ICS container and quickly pull the

spray tube to the open end of the manifold near the throttle plate.

13. Release the nozzle once the tip of the spray tube gets near the throttle plate.

NOTE:

Do not spray outside of the throttle bore housing.

14. If the MotorVac CarbonClean System is in use at the time, press the STOP button or Turn the timer

knob to the zero position to depressurize the engine’s fuel system.

NOTE:

It is recommended that after each pass with the ICS
container, the engine should be “bumped over” using
the starter.

DO NOT ALLOW THE ENGINE TO START

15. Quickly turn the ignition to the start position then back to the off position to rotate the engine over slightly.