Fuel Contamination

This analysis includes diesel fuel distillation (ASTM D86) to determine if the fuel is contaminated with light hydrocarbons such as gasoline. The analysis is performed with state-of-the-art chromotography and other instruments.

The analyses should be done when there is any suspicion of a fuel contamination problem for either gasoline or diesel engines.

Fuel Quality

This analysis should be done whenever fuel quality becomes questionable, such as when experiencing power loss, increased exhaust smoke, or other engine operating problems. The analysis includes a calculated Cetane Index (ASTM D4737) for diesel fuel and Octane rating for gasoline.

Unusual Problem Diagnosis

Diesel engine over-fueling can result from leaking injectors, low turbo charger boost pressures, poor quality fuel, or restricted air intake.

 Overfueling will cause high soot levels in engine oil which in turn will cause increased wear of engine components.

One particular problem related to overfueling is fuel line erosion. High pressure fuel lines are subjected to fuel flow of high velocity. Under certain conditions, the high fuel flow causes metal erosion of the interior of the fuel lines and these tiny metal pieces will erode fuel injectors creating small holes in the injector resulting in fuel leakage and overfueling.