If I put 6 cups of water in when it is done there is left only 4

The good news is there is nothing wrong with your coffee maker!

With any coffee maker that heats up the water, you're going to lose some of that water to the heating process (steam, etc.). You also don't get every bit of water out of the machine.

So that's why you need to look at the water reservoir level indications instead of using the graduations marked on the glass coffee carafe.

Typically, once you've figured out how you coffee maker works, I'd just "add" 2 more cups of water in the glass coffee carafe to get the amount of cups you want to brew.

I know my coffee maker is pretty close to exactly 2 cups shy of whatever I put in the glass carafe that I pour into my coffee maker. That's when I noticed the markings inside the water reservoir that didn't match the coffee pot. It was always 2 cups shy, so I just put 8 cups of water (using the carafe) to get 6 cups in the morning.

So I suggest you just you make these small adjustments to your water measuring and you'll get the right amount of brewed coffee out of your machine!

Hope you find this Very Helpful and best regards!

Make sure you are not using a paper filter and a gold tone filter at the same time.

Make sure the caraffe lid is down all the way and that the center knob of the caraffe lid is making contact with the spring at the bottom of the filter basket.

If the above conditions have been met, then decalcify your coffeemaker by running 1/3 carafe worth of vinegar and 2/3 caraffe worth of water through your coffeemaker - use the self-clean button to do this - will take about 35 minutes.