Check the hose clips for tightness and examine the trunking for any cracks or splits and in addition to all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best exaggeration to find a leak is to have the engine management and hot and after that vaporizer lighter gas /propane or brake cleaner more or less each joint in turn. If the engine rev s up you ve found your leak.
Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me say you a tiny more practically the trouble history. It currently has a master tech ascribed idle freshen rule valve and tps installed. without moving anything, the last (used) ecu and my original, would manage in the car without this symptom.
I don't have any check engine lights unless I unplug the MAF sensor. considering 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 hermetically sealed coming at idle.