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EFI – ELECTRONIC FUEL INJECTION

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PURPOSE
Electronic fuel injection [EFI] is designed to manage the fuel system and inject fuel into the combustion chamber.  There are several types of EFI eg group injection, sequential injection.  All injection systems are designed to offer 95% fuel economy in normal operating temperatures.

THINGS TO LOOK FOR
Any EFI will suffer if the fuel level runs low.  This being a main focus as this will cause the EFI to fail. Because the fuel operates on pressure and when the fuel level is low there is a possibility of mixing air with the fuel thus creating a power loss. As the fuel system operates on fuel pressure it is easy to see if fuel leaks become apparent.  If the fuel is leaking, turn off the engine ASAP and, at this point, if a rubber hose is split around the injection rail it may be difficult to spot and get.

 
This article is found in the Virtual mechanic CD Rom
You can download it for the price of a latte, but you will learn not to buy a lemon
By Darren Gow-Brown, Melbourne Australia ©2009

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