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Fuel Optimiser How many to install
 
Decide how many devices have to be used according to the engine type. Look at the following chart for guidance:

Number of devices according to the engine capacity.
GAS ENGINES  DIESEL ENGINES
Up to 2.5 liters 1 unit Up to 3 liters 2 units
Larger than 2.5 liters 2 units 3 to 8 liters 1 at the front of the injection bomb and 1 per cylinder. The installation procedure differs according to the type of pump: mechanical or computerized.
Larger than 7 liters 3 units    

Gas Engines:

The devices are fit at the the carburator inlet, at the fuel distribution pipe inlet that feeds the injectors (mulit-injection) or at the fuel inlet pipe that feeds the engine (mono-injection). Always behind the gas filter.
 

Diesel Engines:

1) Cars: as a rule, two devices are installed at the injection pump inlet, behind the diesel filter.

2) Trucks, buses, etc: In this case engines are divided into:

a) Cars: as a rule, two devices are installed at the injection pump inlet, behind the diesel filter.

b) Trucks, buses, etc: In this case, engines are divided into:

I) computerized injection pump: In this case, the devices are installed at the inlet of the manifold that distributes fuel into the injectors or, if there is enough room, at the inlet of each injector.

II) Mechanical injection pump: One device is installed at the injection pump inlet and the others on each injection intake line, at least one device per cylinder + one. Install 7 devices in a 6 cylinder engine.

In some cases, when the engine works with an excess of fuel, it is advisable to lower the pump flow by 10%. This is the case when the economy is poor after a month has elapsed.