need help please polo 1.4 16v 2003 swings not starting has fuel but dont know why not sparking and not pulsing

The answer to your problem is a good mechanic.

Without doing any diagnostics its impossible to give you a solution to your problem.

You need 3 things for an engine to work air, fuel and fire. A knowledgeable professional will be able to determine where the problem is fairly accurately and get you back on the road soon.