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Engine surfaces and fluids can be hot. A running engine will have moving belts exposed at the front of the engine (rear of bus). These hazards can result in personal injury or death. stop the engine while connecting test equipment and work carefully around a running engine. Do not allow tools or test equipment to protrude or vibrate into the path of rotating belts. |
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| Required Tools | ||
| Part Number | Part Name | Qty |
| 164-3310 | Infrared Thermometer | 1 |
When the engine runs at low idle, the temperature of an exhaust manifold port can indicate the condition of a fuel injection nozzle.
A low temperature indicates that no fuel is flowing to the cylinder. An inoperative fuel injection nozzle or a problem with the fuel injection pump could cause this low temperature.
A very high temperature can indicate that too much fuel is flowing to the cylinder. A malfunctioning fuel injection nozzle could cause this very high temperature.
Use the 164-3310 Infrared Thermometer to check exhaust temperature. The Operator's Manual, NEHS0630 contains the complete operating and maintenance instructions for the 164-3310 Infrared Thermometer.