Question # 68

A diesel truck exhibits high fuel return rates from all injectors. Engine power is low. Rail pressure lags below command. What is MOST likely?

Options:

A.

Leaking fuel rail pressure relief valve

B.

Worn injector nozzle tips

C.

Failed turbo actuator

D.

Clogged EGR valve

Viewing question 68 out of 72 questions
Industry research shows that students who utilize T Series practice tests are significantly more likely to pass exam.


Our free T Series practice questions act as a diagnostic tool to give you a clear snapshot of your Automotive Service Excellence: Medium-Heavy Truck series readiness. Discover which topics are your strengths and, more importantly, which critical topics require your immediate attention.