Car not firing up

[feel_ixx]

The hissing noise sounds kind of like air escaping. Is that right?

[Rotary]

I haven't checked for spark yet, how do I do this?

Can check spark a couple of ways,

by putting a new spark plug on one of the leads and making sure its metal (side or base) is Earthing, anywhere there is a good earth connection(usually an exposed bolt attached to the chassis or the inlet manifold).
If your unsure and have a multi-meter then check it, otherwise you could damage something.
The other way is if you have an old ignition lead with end exposed, that will work without a spark plug but you must keep a 1cm gap between it and earth
Then just turn the ignition and watch or listen for loud snapping noises
Just need to be certain there’s no fuel leaks or spilt fuel anywhere as it may ignite it, so if there a strong fuel smell then don’t do it.

or without checking for spark, you can just get a can of Starting Fluid, from any Autoshop, and spray a good amount in the throttle body, with it on full throttle, then try and kick it over.
If there is any kick or it starts briefly, it has spark and no fuel, no kick at all, will most likely mean no spark (so Electric or ignition issue)

[feel_ixx]

Took the car to mxmania today, its now all sorted. There was no spark, and Dave took apart the AFM and found that the part that opens and closes was jammed by something internal, after he unjammed it the car still didnt start. So we put in a new AFM and bam, car started. Glad that it wasnt anything too major, and actually it was something I totally didnt expect to be gone wrong but hey, its always like that.