When investigating the cause of frequent injector failures on a HEUI B engine, Technician A says a likely cause could be engine oil contaminated with dirt entering the engine through a leaking air filter. Technician B says that condition will not cause injector failure, because the oil is filtered before supplying the injectors. Who is correct?
A)Technician A
B)Technician B
C)Both A and B
D)Neither A nor B

Question

Quizplus · Accepted Answer

Contaminated engine oil can cause injector failures in HEUI systems because the oil is used to actuate the injectors, and dirt can cause wear or blockages.

When Investigating the Cause of Frequent Injector Failures on a HEUI