EDGE-CUTTING 3573123 - Caterpillar

engine uses a strategy for the cold cylinder cutout to reduce white exhaust smoke after start-up and during extended idling in cold weather.During a cold start and/or extended periods at low idle, the engine's Electronic Control Module (ECM) turns off one unit injector at a time in order to determine if each cylinder is firing. If a cylinder is firing, the ECM turns on the injector. If a cylinder is not firing, the injector is turned off. This cold cylinder cutout provides the following benefits: reduction of white smoke, improved engine starting, reduction in the use of ether injection and reduction of warm-up time.Note: During operation of the cold cylinder cutout, the engine may seem to misfire. This is normal. No corrective measures are necessary. The cold cylinder cutout is activated after all of the following conditions are met:
The parking brake is engaged.
The transmission is in neutral.
The ground speed of the machine is zero.
The jacket water coolant temperature is below 63 °C (145 °F) or the aftercooler coolant temperature is below 10 °C (50 °F).
Ten seconds after starting or three seconds after ether injection is completed.
Ten minutes after extended idling of the engine has occurred.The cold cylinder cutout is deactivated if any of the following conditions are met:
The parking brake is disengaged.
The transmission is placed in gear.
The temperature of the jacket water rises above 70 °C (158 °F).
The temperature of the aftercooler coolant rises above 15 °C (60°F).
The engine speed drops 100 rpm below low idle.
Manual ether injection is used.
The cold cylinder cutout is disabled with the Caterpillar Electronic Technician (Cat ET). If the transmission is returned to the neutral position and the parking brake is engaged, the cold cylinder cutout will activate again after ten minutes, provided that the other conditions are met.