Most filters remove dirt particles, but no water (unless it bit). The fact that the boost pump water forms an emulsion with the fuel and in this way passes through the filter. If the fuel filter has detected traces of water, she probably already got into the injection system. Bausch & Lomb shines more light on the discussion. Should immediately flush the entire system with fresh fuel quality fuel. Get rid of the "water" problems can and with special alcohol compounds, but often use them should not be, because they increase the deposition carbon deposits on valves and corroded. Drain the sediment (water) from the tank, replace the fuel filter, Fuel containing no water, then let the engine and let it run for several minutes. Recommended install an additional filter at the outlet of the fuel tank, it will better protect the food system, delaying the dirt and rust.
According to the magazine 'Fixed Assets' 9 / 2002' The secret of longevity: the withdrawal of heavy lifting and transport equipment 'by O. Zharkov Air intake seamless flow of purified air into the diesel – a prerequisite for its functionality. Sucking dust through leaky inlet duct capable greatly reduce the life of the engine: particulate matter will be literally "ripped off" the working surface of the cylinder. Therefore, maintenance should include inspection of all air duct leak. The reason for its violations can become unnerved clamp or a crack in the duct. Check the air filter elements, if necessary, clean or replace them. Check for leaky joints or places in the corrugations.