Water In Diesel Fuel Injectors

Water is commonly found in diesel fuel due to condensation handling and environmental conditions.

Water in diesel fuel injectors. Water causes the steel components to rust and can destroy the fuel injectors distributor pump and other parts. Too much fuel will also flood a cylinder effectively reducing power. Water in the fuel can also promote the growth of bacteria and fungi. This can cause a difficult or no start condition as well as a smokey exhaust.

No additives can eliminate water from diesel fuel alcohol based products or methyl hydrate products are not for use in diesel fuel. When this happens they cause a leak down resulting in a reduction of fuel pressure across the fuel rail. Any contaminant including water can cause costly damage. Water in fuel tanks lines injectors filters etc will freeze more readily than the fuel.

Advertisement the injector on a diesel engine is its most complex component and has been the subject of a great deal of experimentation in any particular engine it may be located in a variety of places. In some cases water contamination can cause fuel injector tips to explode should the water make it through the fuel filter and into the engine. With the injector entirely filled with diesel fuel at low pressure from the preceding injection water is forced through a one way valve a coaxial hole and connected radial holes in the injector needle into the space surrounding it whereby the diesel fuel above the water exits and is returned into the injection pump. Diesel engines use direct fuel injection the diesel fuel is injected directly into the cylinder.

With this being the case the first line of defense on an oil. As the tank cools at night humid air is sucked back into the tank and water condenses out on the cooler tank walls. Over time diesel fuel injectors wear out and fail to close completely. The prevailing theory is that the fuel pump boot and cover are rotting which is allowing water to get in.

Diesel fuel tanks are always subject to water condensation because diesel fuel unlike gasoline has no vapor pressure to displace air. These micro organisms produce a slime that moves through the fuel system clogging filters and fouling fuel injectors. Water freezes at 32 f. It is important to understand that.

The high humidity and heat over the last few weeks may have caused water to condense on the bottom of the trunk and leak past the fuel pump boot and cover and into the tank. Somehow water got into my fuel system. Most fuels freeze at lower than 20 f.