An internal leak from either the high-pressure connector or the fuel injector will result in increased fuel return flow
from the cylinder head.A single cylinder cut-out test will not be able to isolate this leak because it occurs before it
reaches the control needle inside the injector. Because all injectors share the same pressurized fuel supply from the
rail, all cylinders will share the loss of fuel equally.
Determine if there is a leak at the fuel connector. Refer to Procedure 006-026 in Section 6.
