Carbon MCS-352 User manual

SERVICE MANUAL
MCS-352
DUAL SYSTEM
FOR
Gasoline (Petrol) and
Diesel Engines
MOTORVAC TECHNOLOGIES INC.

Table of Contents
Introduction.......................................................................................................................................... iii
Overview................................................................................................................................................ v
System Features and Functions ......................................................................................................1-1
Unit Features.................................................................................................................................1-1
Control Panel Functions................................................................................................................ 1-3
Features and Functions ................................................................................................................ 1-5
Safety Information .............................................................................................................................2-1
GASOLINE (Petrol) SYSTEMS:
Before You Begin ......................................................................................................................3-1
First Time Operation............................................................................................................3-1
Mixing Ratios....................................................................................................................... 3-2
Fuel System Cleaning Procedures ..........................................................................................4-1
Determining the Vehicle's Fuel System Type .....................................................................4-1
Carburetor Setup Procedure ...............................................................................................4-3
Carburetor Cleaning Procedure ..........................................................................................4-5
Throttle Body Injection (TBI) Setup Procedure ...................................................................4-7
Throttle Body Injection (TBI) Cleaning Procedure ..............................................................4-9
Port Fuel Injection (PFI) Setup Procedure ........................................................................4-11
Port Fuel Injection (PFI) Cleaning Procedure ...................................................................4-13
Continuous Injection System (CIS) Setup Procedure .......................................................4-15
Continuous Injection System (CIS) Cleaning Procedure ..................................................4-17
DIESEL SYSTEMS:
Before You Begin ......................................................................................................................5-1
First Time Operation .................................................................................................................5-1
Diesel Fuel System Cleaning Procedures ..............................................................................6-1
Filling and Mixture Setup..................................................................................................... 6-1
Priming ................................................................................................................................6-3
Diesel Fuel System Setup Procedure .................................................................................6-5
Diesel Cleaning Procedure .................................................................................................6-8
Trouble Shooting and Additional Help............................................................................................7-1
Electrical Data................................................................................................................................7-2
Appendix A - Maintenance............................................................................................................... A-1
Maintenance Procedures ............................................................................................................. A-1
Replacing the Fuel Filter .............................................................................................................. A-1
Maintenance Record.................................................................................................................... A-3
Appendix B - System Accessories .................................................................................................B-1
Basic Adapter Kit (200-3000)....................................................................................................... B-1
Asian / European Applications (200-3009) ................................................................................ B-3
Optional Adaptors ....................................................................................................................... B-5
Appendix C - Parts ........................................................................................................................... C-1
Parts for the MCS 352.................................................................................................................. C-1

Introduction
Congratulations on your selection of the CARBONCLEAN DUAL SYSTEM. By choosing this
product, you are acquiring the most technologically advanced method available for cleaning
harmful fuel system contaminants from gasoline engines.
The MCS 352 is a self-contained cleaning system, designed to connect to any gasoline or
diesel engine (up to 7.3L). Once the unit is connected, it temporarily replaces the regular
fuel supply with a mixture of fuel and the specially formulated CarbonClean Cleaning
Detergent.
With the engine idling, the unit pumps the fuel/detergent mixture through the engine's fuel
system. As the mixture passes through the vehicles’ fuel system, it loosens and dissolves
accumulated deposits, which then pass harmlessly out through the exhaust system or are
removed by the unit’s fuel filter. Removing contaminants from the combustion chamber
creates a more even burn of fuel, which improves horsepower, increases fuel economy, and
reduces exhaust emissions.
Please refer to the chart below for the recommended service intervals:
Recommended Service Intervals
Type of Vehicle Mileage
Automobile - Gasoline 12,000 – 15,000 miles or 19,000 – 24,000 kilometers
or once a year
Automobile - Diesel 12,000 – 15,000 miles or 19,000 – 24,000 kilometers
Light-Duty Trucks or once a year
Medium to
Heavy-Duty Trucks
60,000 – 100,000 miles or 97,000 – 161,000 kilometers
or 1600 to 1800 hours of operation
Please study this User Guide to become thoroughly familiar with the MCS 352 before using it.
IMPORTANT
The MCS 352 Fuel System Machines are designed to work
EXCLUSIVELY
with CarbonClean Cleaning Detergents.
Use of any other chemicals during this process may cause operational failure
of the MCS 352 and voids the manufacturer’s warranty.
See warranty card for details.

Overview
This manual contains all the information you need to use the MCS 352. Please make sure all
technicians have read this manual and have it within easy reach whenever the unit is being
used.
The following is a quick reference to the information in this manual:
System Features and Functions
This chapter describes the MCS 352 gauges, control switches, and connections.
Safety Information
Adhere to the safety guidelines in this chapter at all times!
Before You Begin
Follow the instructions for each chapter before using the unit for the first time.
Fuel System Cleaning Procedures
These chapters contain step-by-step setup and cleaning procedures for using the unit
with each of the fuel system types: Carburetor, Throttle Body Injection (TBI), Port
Fuel Injection (PFI), Continuous Injection System (CIS) and Diesels.
Troubleshooting and Additional Help
Turn to this chapter for machine service data for the MCS 352.
Appendices – Maintenance, Accessories, Parts.
The appendices contain routine maintenance procedures for the MCS 352, such as
changing the fuel filters, etc.

System Features and Functions
The front of the MCS 352 cabinet contains the control panel, control switches and status indicators.
The fuel reservoirs and filters are mounted on the sides of the cabinet.
DIESEL
OUTPUT HOSE-RED
200-0400
RETURN HOSE-BLACK
2
00
-
0300
GASOLINE (PETROL)
OUTPUT HOSE-RED
200-0400
RETURN HOSE-
BLAC
K
DRAWERS
(4)

MCS 352 – BACK VIEW
POWER CORD
DIESEL
TANK
GASOLINE
TAN
K

MCS-352 Control Panel Functions
ON/OFF
SWI
TCH
START/RUN
SWITCH
TIMER
020
-
DIESEL PRESSURE
GAUGE
GASOLINE
(PETROL)
PRE
SSU
RE
GASOLINE
(PETROL)
PRESSURE
SERVICE
SELECTOR
GREEN
LAMP
AMBER
LAMP
CONTROL PANEL ASSEMBLY

MCS 352 Features and Functions
Descriptions of the gauges, control switches, and status indicators making up the control panel are
listed below. Please become familiar with these features and functions before using the unit.
Adjust Time Knob Sets or re-sets the system run time in one-minute increments, from 1
to 60 minutes.
Service Selector
Switch
Selects fuel type: Diesel or Gasoline
Start/Run Switch
(Momentary)
Starts the cleaning cycle.
Run Cycle Light
(green)
Illuminates when the run cycle is under way.
On / Off Switch Shuts off power to the unit.
On / Off Light (orange) Illuminates when switch is on.
Fuel Pressure Gauge Displays output pressure of the unit’s output hose.
Pressure Adjust
Regulator
Used to adjust the gasoline (petrol) system pressure during the
cleaning process. Turn clockwise to close (increase the pressure).
Counterclockwise to open (decrease the pressure).
Warning Alarm Sounds until pump builds pressure, or when the run cycle is
complete or when a pressure loss occurs.
Output Hose (red) Connects to the input side of the vehicle's engine fuel system.
Return Hose (black) Connects to the return side of the vehicle's engine fuel system.
Fuel Filter Filters out contaminants that become removed during the cleaning
process. See Appendix for replacement information
Battery Cables Positive (red) and negative (black) battery connections
(12 VOLTS DC)
Circuit Breaker 15 Ampere circuit breaker for pump
Fuel Tanks (2) Holds up to 2 liters (70oz.) per tank

Safety Information and Precautions
/!\ DANGER
Vehicle exhaust gases contain Carbon Monoxide, which is a colorless and odorless lethal gas.
Only run engines in well-ventilated areas and avoid breathing exhaust gases.
Extended breathing of exhaust gases will cause serious injury or death.
/!\ WARNING
Exhaust gases, moving parts, hot surfaces, and potent chemicals are present during the use of the fuel
system cleaner.
Read and understand the operator’s manual before using the fuel system cleaner.
When using chemicals always refer to the MSDS sheets and manufacturer’s instructions for
the proper procedure to handle emergency medical treatment, cleanup, handling and storage
requirements.
Improper use of the fuel system cleaner or exposure to exhaust gases or cleaning chemicals can cause
injury.
Flammable fuel chemical and vapors can ignite.
Avoid exposure to flames, sparks, hot engine parts, and other ignition sources.
Always keep fully charge fire extinguisher nearby. The extinguisher should have a class B
rating and be suitable for gasoline, chemical, and electrical fires.
Cleanup any fuel or chemical spills immediately.
Dispose of contaminated cleanup material according to governing environmental laws.
Never look directly into the air induction plenum or carburetor throat when the engine is
operating.
Always plug or cap any open fuel lines during service.
Keep Cleaner and Detergent container closed except when filling reservoir.
Explosion or flame or exposure to flammable liquid and vapors can cause injury.
Flammable liquid can splash out of reservoir when pump is on and/or unit is being moved.
Always keep Reservoir Cap secure except when filling reservoir.
Explosion or flame can cause injury.
Many fuel systems maintain residual pressure in fuel lines even after the engine has been turned off.
Wear safety goggles.
Wear chemical resistant gloves when connecting or disconnecting fitting and adaptors.
Obtain ZERO psi before connecting or disconnecting any fuel lines or adaptors.
Explosion or flame or exposure to flammable liquid and vapors can cause injury.
See next page

Chemicals can cause harmful byproducts.
Use only approved chemicals (refer to operator’s manual).
Do not swallow or ingest any chemicals.
Use with adequate ventilation. Avoid breathing vapors.
Do not store chemicals on or in the machine.
Improper use of chemicals can cause injury.
Over exposure can have harmful effect on eyes, skin, respiratory system and possible
unconsciousness and asphyxiation.
Improperly blocked vehicles can move.
Set the parking brake and chock the wheels.
Moving vehicles can cause injury.
Moving engine parts.
The engine-cooling fan will cycle on and off depending on the coolant temperature and could operate
without the engine running.
Wear safety goggles.
Always keep objects, clothing, and hands away from the cooling fans and engine parts.
Moving engine parts can cause injury.
Hot surfaces are present during and after running the engine.
Do not contact hot surfaces such as, manifolds, pipes, mufflers, catalytic converters or
radiators and hoses.
Hot surfaces can cause injury.
Catalytic converters become extremely hot.
Do not park a converter-equipped vehicle over dry grass, leaves, paper, or any other
flammable material.
Do not touch a catalytic converter until the engine has been off for at least 45 minutes.
For tests allowing unburned hydrocarbons or service involving operation of an overly rich
condition, minimize the time of rich operation, monitor the catalytic converter temperature,
and allow at least two minutes of operation at normal mixture subsequent to testing or service
for converter cooling.
Catalytic converters can cause burns.
Cracked fan blades can become airborne.
Examine fan blades for cracks. If found, do not service the vehicle.
Flying objects can cause injury.
See next page

Batteries produce explosive gases and can explode.
Wear safety goggles when working on or near batteries.
Use in a well-ventilated area.
Keep sparks and flames away from the battery and never lay tools, equipment or other
conductive objects on the battery.
When tools or equipment is connected to the battery, make sure the equipment power switch
is off. Connect the positive lead of the equipment to the positive lead of the battery first;
connect the negative lead of the equipment to a solid ground point as far from the battery as
possible.
Keep battery acid away from skin or eyes. In case of eye contact, flush with clean water for 15
minutes and get medical attention.
Battery explosion and ignited gases can cause injury.

Before You Begin
First Time Operation
NOTE
The following process is used to flush factory-
testing fluids out of your new machine, and is
only necessary before the first time you use
the unit.
1. Verify that the fuel filter is connected and securely in place on the side of the cabinet.
2. Check the output/return hoses, battery connections, and all external components for damage.
3. Turn the Gasoline (Petrol) PRESSURE REGULATOR on the unit’s control panel
counterclockwise until it is completely open.
4. Attach the unit to the vehicle's battery by connecting the red battery clip to the positive (+)
battery terminal and the black battery clip to a solid ground point as far from the battery as
possible. Press the SERVICE SELECTOR switch to the side with Gasoline (Petrol) FUEL
SYSTEM SERVICE.
5. Fill the reservoir on the right side with clean gasoline (petrol) until the tank level
indicates 1/4 tank. See notes on page 3-2 and figure 3-3 for alternate filling procedure.
6. Connect the output (red) hose and return (black) hose together by using the
#060-1400 adaptors and securing them with a clamp. Follow the procedures below to flush
fuel through the system:
• Set SERVICE SELECTOR to gasoline (petrol) SERVICE SYSTEM.
• Set the TIMER knob for five minutes.
• Press the ON/OFF switch to the on position. NOTE: Alarm will sound continually
until pump starts.
• Press and hold the START/RUN switch for five minutes.
• Release the START/RUN switch.
• Turn off the ON/OFF switch.
7. Disconnect the output and return lines.
8. Connect the #060-1400 adaptor to the output hose, then drain the gasoline from the reservoir
using the following procedure:

• Set the TIMER knob for five minutes.
• Direct the output (red) hose into an appropriate container.
• Press the ON/OFF switch to the on position. NOTE: Alarm will sound continually
until pump starts.
• Press and hold the START/RUN switch until the fuel from the unit has been emptied
into the container.
• Release the START/RUN switch.
• Turn off the ON/OFF switch.
• Dispose of the fuel in an environmentally approved method.
9. The reservoir is now completely drained of fuel. Follow the steps below before performing
the first cleaning service:
Mixing Ratios
Using a separate container or the MCS 352 reservoir, follow the chart below to mix the proper
amounts of CarbonClean Cleaning Detergent for Gasoline and fuel for the cleaning process.
NOTE: See page 3-3, when utilizing tee adapter 060-4500 for alternate filling procedure.
Always have the ball valve on tee adapter closed until ready to fill reservoir while using the
vehicles fuel pump. After connecting all hoses, start engine. Check all connections for leaks.
Partially open ball valve just enough to allow gasoline (petrol) to flow into reservoir and not
have the engine die.
NOTE:
The proper ratio is 1 oz. (30 ml.) per cylinder to 3 oz. (90 ml.) gasoline.
DETERGENT / GASOLINE (PETROL) RATIO
3 cylinders = 3 oz. (90 ml.) detergent to 9 oz. (270 ml.) gasoline, (360 TOTAL)
4 cylinders = 4 oz. (120 ml.) detergent to 12 oz. (360 ml.) gasoline, (480 TOTAL)
5 cylinders = 5 oz. (150 ml.) detergent to 15 oz. (450 ml.) gasoline, (600 TOTAL)
6 cylinders = 6 oz. (180 ml.) detergent to 18 oz. (540 ml.) gasoline, (720 TOTAL)
8 cylinders = 8 oz. (240 ml.) detergent to 24 oz. (720 ml.) gasoline, (960
TOTAL)
10 cylinders = 10 oz. (300 ml.) detergent to 30 oz. (900 ml.) gasoline, (1200
TOTAL)
12 cylinders = 12 oz. (360 ml.) detergent to 36 oz. (1080 ml.) gasoline, (1440
TOTAL)

Filling Reservoir Procedure-verify that regulator is open or
use black hose when drawing fuel from vehicle.
FIGURE
FIGURE
A-1 THIS METHOD IS ALSO
TYPICAL FOR RETURNLESS
/ SINGLE LINE FUEL
INJECTION SYTEMS
THIS METHOD TYPICAL FOR
ALL
TWO LINE INJECTION
SYSTEMS.
SEE NOTE: PAGE 3-2.
060-4500
060-4500
CARBURETOR
FILLING

Fuel System Cleaning Procedures
Determining the Vehicle's Fuel System Type
It is very important to determine the fuel system type of the vehicle to be serviced before
performing
any setup or cleaning procedure on the vehicle. The unit can be used with any of the four
different types of gasoline fuel systems listed below:
Carburetion
Carburetors come in a variety of sizes and shapes. These can be easily identified by locating the
choke plate in the air horn.
Throttle Body Injection (TBI)
Throttle bodies are centrally mounted, as are carburetors, and use one or two electronic injectors.
Port Fuel Injection (PFI)
This system uses a single electronic injector per cylinder, mounted so that fuel spray is directed into
the intake port.
Continuous Injection System (CIS)
A Continuous Injection System is easily identified by noting the fuel distributor and the solid steel or
flex steel lines running from the fuel distributor to each individual injector. The fuel distributor
controls the amount of fuel sprayed into the intake port while the injectors control the opening and
closing pressure.
NOTE
Once you have determined the fuel system type, turn
to the appropriate section in this chapter for
instructions on how to perform the fuel line setup
and cleaning procedure for that system.

Carburetor Setup Procedure
Follow the steps below to connect the unit to the vehicle's fuel system. Make sure the
vehicle has at least 1/8 tank of fuel before beginning this process.
1. Start the vehicle and allow the engine to reach normal operating temperature.
IMPORTANT
Do not perform the setup or cleaning process if the
vehicle’s engine oil or coolant level is low.
If necessary, add oil and/or coolant to the vehicle.
2. Turn the vehicle OFF when normal operating temperature has been
reached.
3. Turn the Gasoline (Petrol) PRESSURE REGULATOR counterclockwise
until the regulator is completely open. Verify that the ON/OFF switch is
turned off.
4. Attach the unit to the vehicle's battery by connecting the red battery clip
to the positive (+) battery terminal and the black battery clip to a solid
ground point as far from the battery as possible. Press the SERVICE
SELECTOR switch to the side with Gasoline (Petrol) FUEL
SYSTEM SERVICE.
5. Remove the vehicle's gas cap to relieve fuel tank pressure.
6. Disconnect the vehicle’s fuel line at the carburetor inlet or at the fuel pump outlet. There
should now be two open ends to work with:
• One coming from the fuel pump.
• One going into the carburetor.
7. Add a pre-mixed gasoline and detergent mixture to the right side (gasoline /petrol) reservoir.
When filling the reservoir, add 1 oz. (30 ml.) of Detergent to 3 oz. (90 ml.) gasoline per
cylinder. See page 3-3 for alternate filling method (Refer to page 3-2 for the proper ratios.)

SEE NEXT PAGE
/!\ WARNING
Flammable Liquid can squirt out of pressurized lines when connecting or
disconnecting.
Wear Safety goggles.
Obtain ZERO pressure before connecting or disconnecting any fuel lines or
adaptors.
Wear chemical resistant gloves when connecting or disconnecting fittings and
adaptors.
Wrap shop towel around pressure fittings and adaptors when disconnecting.
Avoid exposure to flames, sparks, hot engine parts, and other ignition sources.
Explosion or flame or exposure to flammable liquid and vapors can cause injury.
8. As shown in the figure below, connect the MCS 352 output (red) hose to the inlet of the
carburetor and block / deadhead the fuel line coming from the vehicle’s fuel pump.
You are now ready to perform the carburetor cleaning procedure.

Carburetor Cleaning Procedure
Follow the steps below to circulate the fuel/detergent mixture through the vehicle's
carburetor.
1. Verify that Carburetor Setup Steps 1- 8 above have been completed.
2. Refer to the vehicle's service manual for the manufacturer's recommended pressure.
3. Adjust TIMER knob for 30 minutes. (Run time may be adjusted
depending on the condition of the vehicle’s fuel system.)
4. Press the ON/OFF switch on.
5. Press and hold the START/RUN switch.
6. Turn the Gasoline (Petrol) PRESSURE REGULATOR clockwise until the Fuel PRESSURE
gauge reads 4 PSI, or the equivalent of the manufacturer's recommended specifications.
7. Release the START/RUN switch. Check all connections for leaks.
8. Start the vehicle to begin the fuel system cleaning process.
• When the cleaning process is halfway completed, step on the vehicle’s accelerator
quickly three or four times. Then, maintain 1500 – 2000 RPM for 30 seconds.
9. 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.
10. Turn OFF the vehicle's engine.
11. Turn the Gasoline (Petrol) PRESSURE REGULATOR counterclockwise on the unit to release
any residual pressure.
IMPORTANT
Wrap a shop towel around pressure fittings
before disconnection to protect against
residual fuel spray.
12. Disconnect the battery leads, hoses, and adaptors. Return the vehicle's fuel system to its
normal operating condition by re-connecting the vehicle's fuel lines.
SEE NEXT PAGE

13. Re-install the vehicle's gas cap.
14. Start the vehicle and verify that there are no leaks.
15. Test drive the vehicle for five kilometers (3 miles) immediately following the cleaning
service to flush all detergent from the vehicle's fuel and exhaust systems.

Throttle Body Injection (TBI) Setup Procedure
Follow the steps below to connect the unit to the vehicle's fuel system. Make sure the
vehicle has at least 1/8 tank of fuel before beginning this process.
1. Start the vehicle and allow the engine to reach normal operating temperature.
IMPORTANT
Do not perform the setup or cleaning process if the
vehicle’s engine oil or coolant level is low.
If necessary, add oil and/or coolant to the vehicle.
2. Turn the vehicle OFF when normal operating temperature has been reached.
3. Turn the Gasoline (Petrol) PRESSURE REGULATOR counterclockwise until the regulator is
completely open. Verify that the ON/OFF switch is turned off.
4. Attach the unit to the vehicle's battery by connecting the red battery clip to the positive (+)
battery terminal and the black battery clip to a solid ground point as far from the battery as
possible. Press the SERVICE SELECTOR switch to the side with Gasoline (Petrol) FUEL
SYSTEM SERVICE.
5. Remove the vehicle's gas cap to relieve fuel tank pressure.
6. Disconnect the vehicle’s fuel lines from the throttle body. There are now four open ends to
work with:
Pressure Line Return Line
From the tank to the throttle body. From the throttle body to the tank.
7. Add a pre-mixed gasoline and detergent mixture to the right side (gasoline /petrol) reservoir.
When filling the reservoir, add 1 oz. (30 ml.) of Detergent to 3 oz. (90 ml.) gasoline per
cylinder. See page 3-3 for alternate filling method (Refer to page 3-2 for the proper ratios.)