Check the hose clips for tightness and inspect the trunking for any cracks or splits and as a consequence all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best pretentiousness to locate a leak is to have the engine running and hot and after that vaporizer lighter gas /propane or brake cleaner roughly each joint in turn. If the engine rev s happening 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 not at your best pump will every result in insufficient fuel bodily delivered to the engine. Might moreover be worth cleaning out the idle rapidity manage motor / valve as these get clogged going on afterward carbon and some brake cleaner washed through helps release things off.
I don't have any check engine lights unless I unplug the MAF sensor. past the MAF is plugged in later the car will stall unless I put my foot upon the accelerator. There is furthermore an intermittent popping sealed coming at idle.