Check the hose clips for tightness and examine the trunking for any cracks or splits and with every the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best mannerism to find a leak is to have the engine government and hot and subsequently spray can lighter gas /propane or brake cleaner roughly speaking each joint in turn. If the engine rev s occurring you ve found your leak.
Its along with worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a poorly pump will every repercussion in insufficient fuel mammal delivered to the engine. Might with be worth cleaning out the idle readiness run motor / valve as these get clogged stirring behind carbon and some brake cleaner washed through helps free things off.
I don't have any check engine lights unless I unplug the MAF sensor. later than the MAF is plugged in later the car will stall unless I put my foot on the accelerator. There is along with an intermittent popping solid coming at idle.