Is dirty fuel damaging your diesel engine?

Product sales of diesel vehicles are in an all-time high which is predicted to continue. Training courses are also seeing an increase associated with air/fuel related issues of doubt from customers. With more than 50 years' experience within the tools - he labored on the very first LandCruiser to arrive within Australia - well known diesel powered repairer Allan Gray stocks his concerns with us.

Formerly we've been aware of carbon build-up in modern diesels, however according to Allan dirty energy is just as bad, if not even worse.

Common Rail Diesels is an excellent modern development, utilizing very high injector rail difficulties (25, 000 - thirty, 000 PSI). They create high torque at reduced revs, have much enhanced fuel economy and, best of all, they have got dramatically reduced particle emissions.

"We speak to workshops as well as vehicle owners every day and they are revealing some cases of serious damage to diesel-powered pumps, injectors and motors, largely caused by contaminated gas, therefore most of these dramas might have been avoided, " Allan stated.

"Older diesel vehicles are not so much of a problem. More recent diesels have much better tolerances and in my opinion need superior filtration. I recommend extra filtration to my clients.

"The requirement for 'ultra clean' fuel was not as essential on these older models as most had more nice tolerances and in most cases had been fitted with adequate filtration.

"The fuel system pressure inside older (non common rail) engines was around three thousand PSI, whereas now stresses are nearly 10 times just as much.

"OE filters fitted to most typical rail engines are not sufficient in my opinion and I suggest keepers to fit a second (primary) filtration system. "

The bottom line is that all diesels need clean air, fuel and also oil. Injectors in previously diesels pulse millions of occasions in 100, 000km. Defective injectors can cause serious motor damage if they are just squirting fuel into the cylinder instead of atomising it thoroughly. This could go unnoticed until expensive damage has occurred.

Typical Rail Diesels inject as much as six times each shooting stroke and any indicator of a problem should be taken care of immediately. It is a factory necessity to change injector pipes simultaneously as injectors. The gasoline not consumed by the powerplant (up to 80%) is utilized to cool the injectors and is returned to the container (in some vehicles through a radiator).

"It is not unusual for your fuel in the tank to achieve 80°C, so to minimise moisture build-up or condensation, the fuel tank ought to be kept topped up frequently to reduce the introduction of algae which could grow in the warm atmosphere. Algaecides are not normally utilized in fuel additives as they are mainly carcinogenic. "

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