Check the hose clips for tightness and examine the trunking for any cracks or splits and afterward all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best pretension to locate a leak is to have the engine running and hot and after that spray can lighter gas /propane or brake cleaner all but each joint in turn. If the engine rev s occurring you ve found your leak.
Its as well as worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a under the weather pump will all outcome in insufficient fuel creature delivered to the engine. Might plus be worth cleaning out the idle quickness manage motor / valve as these acquire clogged occurring in imitation of 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. with the MAF is plugged in after that the car will stall unless I put my foot upon the accelerator. There is in addition to an intermittent popping sound coming at idle.