Quote:
Originally Posted by ukvolvo
Would i notice a difference if i did a ear test (long stick in ear to hear vibrations in effect) on the pump and surrounding areas? Ive already did the injectors and inlet with no huge difference between.
|
Yes, stick, tubing, mechanic's stetheocope, etc. all a useful tools for this instance.
Vacuum pump should theoretically be a clacking sound 1/2 engine RPM (camshaft speed), may intermittently fade in and out.
Injectors have more of a ringing ping, individually repeating at 1/2 engine RPM.