When performing a back leakage test on a CR engine with CRI2 injectors, excessive fuel flow from the fuel return line was measured from the cylinder head. Which of the following conditions is most likely the cause?

Question

Quizplus · Accepted Answer

A leaking quill tube connection can cause excessive fuel flow from the fuel return line, as it may allow fuel to bypass the injector and return directly to the fuel tank, leading to increased back leakage.

When Performing a Back Leakage Test on a CR Engine