General starting problem

[easierinwood]

hi there , new to this , have had a scudo van for 5 years and its been great ,until 2 weeks ago , now it starts sometimes and other times it wont , it turns over no probs but just wont start , doesn't matter if its hot or cold it just decides not to go , any ideas ,please please

 

[r masters]

whens last time it had service try changing fual filter