ok i have a B18B in my CRX. When the engine warms up i hear a whining noise. I originally thought it was the alternator. However on further investigation it isnt. When i pull the dipstick out the whining stops. Put the dipstick back in, more whinig. So i thought maybe the dipstick was hitting something so i tried just plugging the hole. Still whines. I have no clue what this is, does anyone have any ideas?