Ticking?
#1
#3
#6
I am aware of the loud injectors that we have... I don't know if this would be the problem... use a stethoscope like bwana says.
you can hear it with your ears if you just get close and touch an injector with your finger... and listen, see if the sound is in sync with the pulse feel of the injector.
you can hear it with your ears if you just get close and touch an injector with your finger... and listen, see if the sound is in sync with the pulse feel of the injector.
#7