HOUSING AS-LEVER 3T5046 - Caterpillar

Either too much fuel or not enough fuel for combustion can be the cause of a problem in the fuel system. Work is often done on the fuel system when the problem is really with some other part of the engine. It can be difficult to identify the source of the problem, especially when there is smoke from the exhaust. Smoke that comes from the exhaust can be caused by a faulty fuel injector. Smoke can also be caused by one or more of the reasons that follow:
Not enough air for good combustion
An overload at high altitudes
Oil leakage into combustion chamber
Air inlet and exhaust leaks
Not enough compression