Check the hose clips for tightness and examine the trunking for any cracks or splits and with all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best mannerism to locate a leak is to have the engine doling out and warm and next spray can lighter gas /propane or brake cleaner around each joint in turn. If the engine rev s in the works 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 tell you a tiny more approximately the suffering history. It currently has a master tech endorsed idle expose govern valve and tps installed. without distressing anything, the last (used) ecu and my original, would control in the car without this symptom.
I don't have any check engine lights unless I unplug the MAF sensor. in the same way as the MAF is plugged in next the car will stall unless I put my foot upon the accelerator. There is afterward an intermittent popping unquestionable coming at idle.