Check the hose clips for tightness and examine the trunking for any cracks or splits and also every the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best artifice to locate a leak is to have the engine handing out and hot and next spray can lighter gas /propane or brake cleaner nearly each joint in turn. If the engine rev s occurring you ve found your leak.
Its also worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a in poor health pump will every outcome in insufficient fuel brute delivered to the engine. Might with be worth cleaning out the idle keenness control motor / valve as these get clogged going on like carbon and some brake cleaner washed through helps clear things off.
I don't have any check engine lights unless I unplug the MAF sensor. subsequent to the MAF is plugged in subsequently the car will stall unless I put my foot upon the accelerator. There is plus an intermittent popping unquestionable coming at idle.