My generator isn’t charging my battery, I started noticing I would need to jump my battery every few times after driving. When I start the car, there’s a rattling type of noise that causes the generator light to flicker and then the rattle clears and the light goes out. I was told to polarize the generator by a friend. I did that at the regulator and got a huge spark. Not sure if I damaged the regulator and generator doing that. Now I’m getting black oily smoke out the exhaust. Advice please? And thank you Sent from my iPhone using H.A.M.B.