issues with not starting

I have the vehicle listed above CLX model with Rocam engine. I have been having issues with starting for a while now. When I turn the key all the lights etc., comes on but it won't start. Everything else is working though. Initially it was just like the fuel wasn't coming through and I had to pump the petrol pedal to get it to start, but now it has gotten to the point where it will start but then once you get to your destination it will not start again. If you leave it for a few hours or so it will start again.. I am really at my wits end as we are trying to sort it out between myself and my brother but right now we are looking at the starter as the possible culprit. Should we perhaps also look at something else? I will appreciate any advice.