Faults Fault table Incorrect valve clearance Check valve clearance and set if necessary Engine electronics has detected a system error and activates an equivalent speed Check error according to error code and eliminate error if necessary 62 © 2009 Engine starts, but runs irregularly or fails Belt/V-rib belt (fuel pump in belt drive) Check whether torn or loose Compression pressure too low Check compression pressure Check injection line Cold starting device Check/replace Fuel quality does not comply with operating manual Change the fuel Faults Causes Measures Glow plugs defective Change Fuel filter contaminated Clean Injector defective Change Air in fuel system Vent 7 Faults Causes Measures Engine starts, but runs irregularly or fails Belt/V-rib belt (fuel pump in belt drive) Check whether torn or loose Incorrect valve clearance Check valve clearance and set if necessary Compression pressure too low Check compression pressure Cold starting device Check/replace Glow plugs defective Change Air in fuel system Vent Fuel filter contaminated Clean Fuel quality does not comply with operating manual Change the fuel Injector defective Change Injection line leaks Check injection line Speed changes are possible and diag- nostic lamp lights up Engine electronics has detected a system error and activates an equivalent speed Check error according to error code and eliminate error if necessary