INSULATION 1246568 - Caterpillar

Table 1
Required Tools    
Part Number     Part Name     Qty    
349-4200     Thermometer     1    When the engine runs at low idle, the temperature of an exhaust manifold port can indicate the condition of a unit injector.A low temperature indicates that no fuel is flowing to the cylinder. An inoperative unit injector or a problem with the fuel system could cause this low temperature.A high temperature can indicate that too much fuel is flowing to the cylinder. A malfunctioning unit injector could cause this high temperature.Use the 349-4200 Thermometer to check exhaust temperature. Refer to the tool's Operation Manual for complete operating and maintenance instructions.