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DATACENTER ERROR!!! Внимание! Авария в датацентре!!


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Diagnosis and repair



TESTING NOTES
-Consult the diagnostic charts first. These will indicate a service to be performed or provide direction to the appropriate pinpoint test.
-If the glow plug indicator is suspected of being faulty, go directly to the glow plug indicator diagnostic procedure before performing the glow plug system diagnostic procedure.
-If the problem is loss of power and/or increased fuel consumption, go directly to the engine performance diagnostic procedure.

EVALUATING NORMAL DIESEL ENGINE EXHAUST SMOKE
The following is a description of what is normal and expected exhaust smoke for a vehicle with a diesel engine. Diesel exhaust smoke can be classified into categories according to the color of the smoke.

Blue-white Smoke
-Blue-white smoke may be observed at engine start-up whether the engine is up to operating temperatures or not. This start-up smoke will be observed at all ambient temperatures and should last no longer than a minute after the vehicle is driven.
-When ambient temperature is below 10°C (50°F), blue-white smoke can return after the engine warm-up due to extended idling. This is due to the combustion chambers cooling down during periods of extended idling time.

Heavy Blue-White Smoke.
-Heavy blue-white smoke will occur when the engine is operated at wide-open throttle with the transmission in neutral or with a lightly loaded vehicle in any transmission gear setting. The smoke is a normal characteristic for a diesel engine with a light governor spring in the fuel injection pump. This results in the following characteristics due to the engine operating above its rated speed (3300 rpm) in a no-load or lightly loaded condition:
-Fuel injection pump governor hunting resulting in high speed engine rpm surging.
-Engine sputtering or misfiring.
-Chassis fuel system air leaks may also cause continuous heavy blue-white smoke.

Black Smoke
-Black smoke occurs whenever the engine is working hard. The engine works hard when it is going up a steep grade, pulling a trailer, carrying a heavy load, or during acceleration.
-More black smoke will be observed when operating the vehicle at higher altitudes.
-If black smoke is observed while the engine is idling (at low altitude) or under normal driving conditions, the problem should be diagnosed as soon as possible.



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