Merc 7.4 MPI Injector Noise
 

I have a 7.4 MPI engine and I noticed a noise I haven't heard before.
When I turn the key on, along with the normal beeps from the dash
panel I notice a electric fuel pump type noise which lasts 2 or 3
seconds and eminates from the injector area. The unit runs fine but I
don't recall hearing this noise in the 5 years I've had this boat. Is
this something I should be concerned about? As I noted, maybe I just
dind't notice this before. Any comments would be appreciated.