Check position of overspeed trip lever and reset if necessary. Ground Protective Relay. Examine ground protective relay and reset if necessary. Tripping of the ground protective relay will not cause an engine to stop unless the locomotive throttle is in Run 5 or Run 6. After starting engine, check ground relay and starting contactois.
Fuel pump switch on control push-button switch box.
Exhaust Smoke Smoke at the exhaust is usually an indication of poor combustion of fuel, but may be due also to excess lubricating oil passing into the combustion chamber. Fuel in a partially burned condition, or engine overload, will cause a black exhaust. If fuel is not igniting, the exhaust may show blue. Blue smoke may appear at light loads, or upon starting, due to low temperature of the combustion chamber. Misfiring, improper fuel, incorrect timing, a faulty injector, or insufficient air, may be the cause of exhaust smoke.