For many years, motor vehicles used a carburettor to regulate the flow of air and fuel into the engine cylinder. From 1990 onwards stricter vehicle emissions requirements were introduced. This led to the introduction of catalytic converters which required a better method of controlling the air to fuel ratio in order to operate properly. Fuel Injectors were then developed to replace carburettors.
Understanding Fuel Injectors
In order to achieve the correct mix of oxygen and fuel in the combustion chamber and enable catalytic converters to operate effectively, fuel injectors were developed to replace the carburetor in motor vehicles. Other machines such as lawnmowers, chainsaws and outboard motors still use a carburetor system.
An individual fuel injector is used for each cylinder. Each fuel injector is essentially a pressure valve that monitors the flow of oxygen to the engine and dynamically controls the volume of fuel needed to maximizes combustion and minimize emissions from the combustion chamber.
Why Fuel Injectors Cause Problems
These can be caused by any one of the following issues:
Clogged or dirty injectors: Symptoms of this include a loss of power, engine misfiring, alternating high and low engine revving
Faulty injectors: Reasons could be a failure of an injector valve to open, to close or to leak fuel. This can result in a misfiring engine and a lower mileage performance.</span></li>
Poor quality fuel: This will often lead to clogged injectors resulting in poor engine performance as outlined above. Other signs of poor diesel fuel quality include dark cloudy fuel or excessive smoke emissions.
How To Avoid Fuel Injector Problems
These problems can be very expensive on the pocket. For example Derek Keogh who is a director of Peter Keogh and Sons says…
Our firm have been using Dipetane continuously in our diesel fuel since April 2009 in 3 John Deere Tractors, Model 7530 and in 4 diesel Jeeps in our potato farm. Prior to using Dipetane we experienced many problems with injectors on our tractors which had to be replaced often and cost €600 each. These problems were brought about by carbon build up or poor combustion. Since using Dipetane we have not had any problems. In using Dipetane in our 4 jeeps we also noticed good improvements in our fuel output .
In the first instance you should attempt to clean the fuel injectors by using a fuel additive or a fuel treatment process such as Dipetane. This is by far the most cost effective first step to finding a solution. Only consider replacing injectors if this does not solve the problem.
Cleaning your fuel injectors will lead to better mileage performance, lower fuel costs and lower the risk of failing emissions tests when taking an MOT or NCT test.