Smoke Smoke is a useful aid for locating some types of trouble, especially if you associate smoke in conjunction with other trouble symptoms. The color of exhaust smoke can also provide you with clues in troubleshooting. The color of engine exhaust is a good, general indication of engine performance. The exhaust of an engine that is in good condition and operating under normal load has little or no color. Incomplete combustion may be due to a number of troubles.
Some manufacturers associate a particular type of trouble with the color of the exhaust.
Malfunctioning turbocharger e. Water An operator should be aware of engine trouble whenever excessive consumption of any of these vital liquids occurs. The possible troubles indicated by excessive consumption will depend on the system in question. Leakage, however, is one trouble that may be common to all systems. Before starting any disassembly, check for a misaligned system or for leaks in the system in which any excessive consumption is occurring.