not exactly it will cause a vaccume leak and therfore cause the computer to compensate but not directly hurt the fuel injectors
Cracked intake manifold...
if it is a vortec, there is a fuel line under the upper intake that goes from the manifold to the injector. check it for cracks and leaking or the injector itself. EGR Valve
Intake manifold is leaking, or worse, cracked cylinder most likely tho, the intake manifold.
on intake manifold
Intake manifold at top of engine?
It is inside the upper intake manifold. It is attached to the fuel injector poppets with a bracket. To inspect/replace you must remove the upper intake manifold.
Most likely the intake manifold gasket is leaking.
It is located under the upper intake manifold.
It would be very unlikely. Fuel injectors give very little problems.
most time it is caused by intake gasket failure
Intake manifold gaskets are leaking, intake manifold is warped.
leaking gasket try tightening the bolts a little might help