10-10-2014, 08:43 PM
I was hoping to not have to post anymore here! Tonite while I was oiling batteries, I heard a "bubbling" noise. It's very quiet in our garage. When the 110v compressor kicks in at 70 psi up to cut off at 90 psi there is a definite whine noise. The bubbling sounds like it is bubbling air into the coolant system. The whine kind of sounds like it may be coming from the engine compressor. I may try to borrow one of Fran's stethoscopes tomorrow to try and track it down for sure. Do any of you have any thoughts on this?