My battery light came on and the battery gauge spiked to high. I went and had the battery tested and the dude told me it was bad so I got new one. Everything seemed fine until a few days later when the same issue popped back up but this time the battery started spewing out the water. I've read that alternators are a common suspect in this matter with it possibly being the voltage regulator. I took out the alternator and went to my local automotive store where it tested all good. I am lost. Any ideas? much appreciated.

 

your alternator sounds like it is overcharging

 

Over charging, get a new alternator.