Why does not start?
I have never heard of an engine noise being described as a tick tack rattling noise. (I assume you mean Tick Tack candy/breathmints?) \
Either way, if it doesnt start, but just makes a rattling/knocking sound, I would ask you did it just quit on you and not restart? Or did it get you where you were going and then would not start when you were ready to leave? If the answer to the first question is yes, then you are likely facing a broken timing belt. The sound you hear are the valves coming into contact with the pistons when you are cranking the starter. This is a bad sound. Lets hope your answer was no to the first and yes to the second. Are you sure have gas? I cannot tell you how many times people have told me "It just won't start!" only to pour a gallon of gas in and varrroooom! What about oil? The tick tack sound just doesn't sound like a healthy engine sound in my head. Do you have oil in the engine? Does somebody hate you enough to drop nuts and bolts into your intake manifold? That would sound like tick tacks. BIG GIANT tick tacks, but tick tacks nonetheless.