It could be the flour you are using? I buy the Lighthouse Pasta & Noodle flour (tipo 00).
The recipe I use it this

200g strong pasta flour (tipo 00)
2 eggs
2 tsp olive oil

put flour, eggs and olive oil and a generous pinch of salt in bowl of a food processor. Mix until dough comes together.
Turn out onto clean work surface dusted with flour and knead for a few minutes by hand until the dough is firm and elastic. Wrap in cling film and leave to rest for at least 10mins.
Divide dough in half, form each piece int o a rectangular shape. Dust pasta rollers in flour and turn to the largest setting. Feed pasta through the rollers, folding the dough into 3 after changing each setting. Roll dough out to the 2nd thinnest setting. Repeat with remaining dough and hang to dry for 5-10mins.

I have made fettuuccine using this recipe, it comes out fantastic. (it's actually from the master chef website).
The other thing to do is have a look on your computer at some You Tube websites that show how to make pasta. I watched the video on the master chef website and found it really useful.

Good luck