How To: Service Kit Instructions

Three types of service kits have been developed to service the different type of engines that have and continue to power vehicles. Many factors contribute to the formation of contaminants (carbon, sludge, varnish, etc…) in an engine. For more than 75 years the carburetor was the primary method of regulating air and fuel flow into an engine to create the power. The introduction of government mandated fuel economy standards and a
corresponding decrease in released emissions into the atmosphere necessitated the development of an improved and more precise fuel management system. For this reason vehicle manufacturers developed and introduced over time three different generations of fuel injection systems to replace carburetion.

Throttle Body Injection:

The first of these was a fuel management system called Throttle Body Injection (TBI), which prove to be an economical method of introducing fuel injection in a vehicle. The basic design incorporated the use of a carburetor like body with most of the internal  components removed except for the throttle valve, hence why it is called a throttle body injection system. Fuel was metered into the venturi by a single injector in small engines and usually two fuel injectors in larger engines. The fuel injectors were above the throat of the throttle body. This system was the first alternative fuel management system to deliver improvements in fuel economy and lower emissions. As governments progressively increased the mandated fuel economy and a corresponding decrease in exhaust emissions, the vehicle manufacturers needed to pursue other methods of managing the delivery of fuel into an engine.

Multi-Point Injection:

The second generation and to this day the most widely used fuel injection system is the Multi-Point Injection (MPI) system. This system has a fuel injector mounted in an intake manifold runner located as close as possible to a cylinder’s intake valve. This injection system has one injector installed for every cylinder that produces the engine’s power. That is a four cylinder has four injectors, a six cylinder has six, an eight cylinder has eight, and so on. MPI utilizes extensive use of computerized technology to deliver a significantly more precise amount of fuel into an engine in order to deliver more power than previous fuel management technologies as well as enhance fuel economy and lower exhaust emissions.

Direct Injection:

The latest fuel management system innovation is the metered delivery of fuel directly into an engine’s cylinder at the optimum point in the power stroke. A direct injection system also has as many injectors as it has cylinders and it requires a sophisticated software program to ensure optimum performance, fuel economy and reduced emissions.



Engine Performance Service Kits

A close comparison of the three service kits yields that each of the kits include a combustion chamber cleaner, an air intake cleaner and a crankcase cleaner. The cleaner formulations within each service kit are the same for the combustion cleaner and the crankcase cleaner, however the air intake cleaning products differ significantly. The air intake and intake valve cleaning products are specifically designed to provide the cleaning of contaminants that are created based on the fuel management system used.

The three engine performance service kits have been packaged to ensure that the correct product cleaning formulations are used to optimize the cleaning service and the delivery of a smoother running engine, improved performance, fuel economy and lower emissions for each of the three major fuel management systems.



First the kits are colour coded to identify with large bold letters identifying the fuel management system that the kit is specifically packaged to service: Red for Carb/TBI, Black for MPI and White for the DI system. In addition, the cutaway picture on the front panel of each service kit provides additional graphical

information as to what to look for when identifying a Carb/TBI, MPI and DI engine when selecting service kit. The cutaway engine identifies the injector location and where the air and fuel is mixed when it enters an engine’s cylinder. This is symbolically identified by
the small cloud like figures in the intake manifold. The blue and orange clouds represent the intake of air (blue) and fuel (orange) into an engine.

Secondly and most important is that each of the

products have been identified by a number. Research has identified that it is important to perform the engine performance service in a specific order as in
itself the cleaning process can be responsible for creating the very same contamination that they are designed to dissolve and remove. As a result, the recommended order for delivering the three cleaning services are as follows:


Step 1: Combustion Chamber Cleaner

A quality combustion chamber cleaner is a viscous type of cleaning fluid as it is designed to provide optimum cleaning performance at high temperatures. Temperatures in a combustion chamber can easily reach 2,000 degrees Fahrenheit and for this reason a viscous cleaner is need to resist evaporating and breakdown the carbon deposits that have formed on the pistons, combustion chamber, piston rings,

valves and in direct injection engines the fuel the combustion cleaning product is being introduced into the engine via the intake system, the viscous texture of the cleaning fluid will adhere to the intake manifold walls and back of the intake valve. Over time this viscous fluid hardens into a varnish like finish that can obstruct and alter the flow of air and fuel into an engine, thus immediately reintroducing the buildup of contaminants.injectors. Since

Step 2: Air Intake and Intake Valve Cleaner

A quality air intake and intake valve cleaner is a solvent based product. Performing the air intake and intake valve cleaner as the second step ensures that any viscous cleaning fluid left within the intake manifold after completing the combustion chamber cleaning service is removed.


Step 3: Crankcase Cleaner

The crankcase is the most neglected area of an engine. Most people believe that when they change their oil that they are riding the inside of the engine of all its contaminants. Most important is that very few are aware that the largest contributor to oil and varnish contamination buildup in the intake manifold and intake valves as well as the buildup of carbon deposits in the engine is the result of the recirculation of the fumes formed in the crankcase back through the intake system by the positive crankcase ventilation valve (PCV) for burning in the engine during the power production process. The crankcase acts a the storage foe the lubricating oil however it also develops a sludge that is made up of fuel that has washed down the cylinder walls, a wide range of fine metals resulting from engine wear and tear, along with oil, water and other chemical contaminants. Changing an engine’s oil and oil filter removes only a fraction of the sludge collected. To contribute to an optimum return of an engine’s performance the addition of a crankcase cleaning service restores the engine’s internal lubrication and storage system cleanliness for the new oil added.


The engine performance service kit has been designed to take the guess work out of solving fuel economy and performance related complaints by customers. The professionals at Driveability designed the service kit to be free of the need of

expensive specialized servicing equipment. The Combustion Chamber and Air Intake Cleaners are packaged in an aerosol format and specialized attachments for properly dispensing the cleaning agents have been included and stored within the products aerosol caps.

The attachments included in the combustion chamber cleaner cap are a specialized actuator, a 2.5 inch extension tube and a tapered nozzle hose connector. On the other hand the air intake and intake valve cleaner cap contains a specialized actuator, a 2.5 inch extension tube and a specially designed plug to seal the hole created in the intake tube.

The Crankcase Cleaner is a product that is poured into the engine and as a result does not require any special attachments however it is capped with a screw cap with pullout seal to prevent evaporation.


Time Required:

Suggested time required to perform the three individual cleaning service steps and an oil and filter change is 1.0 to 1.25 hours


Special Note:

When performing the air intake cleaning process on engines equipped with and MPI or DI fuel management system, an electric drill with a 1/8 inch drill bit is required to create a hole for dispensing the cleaning agent into the intake manifold.