1997 Suzuki Esteem

I am changing a timing belt, and need to know if I need a puller for the crankshaft pulley, and also there is 2 freeze plugs in the back of the block that I can not get out because there is a metal tube going from the radiator to the water pump housing area, do you know how that tube comes out and is there a o-ring to seal it. Please send me anything you find on this, the car is a 1997 suzuki esteem 1.6. Thank You
May 10, 2011.

Why do you want to take out freeze plugs? Did you try to remove crank pulley with 2 prybars?

May 10, 2011.