I am 99% sure you can find SeaFoam at Walmart, Kragen and Autozone, if you have one of those near by. And SeaFoam is just one product, I'm sure you can find some fuel cleaner at any auto parts shop.

The MAF is the Mass Air Flow Sensor. I don't know where it is or what it looks like, but someone on here should. What maintenance has been done to your VX since you bought it? Any records come with it?

Bart