Check the hose clips for tightness and inspect the trunking for any cracks or splits and as well as every the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best way to locate a leak is to have the engine dispensation and hot and next spray lighter gas /propane or brake cleaner approximately each joint in turn. If the engine rev s going on you ve found your leak.
Might afterward be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can attain a quick fault find if you unplug the meter and control the engine without it. if the engine condition is the thesame next chances are the meter or the association to it is faulty. Its after that worth cleaning the MAF sensor wires, as they can acquire coated in imitation of dirt higher than era which after that offsets the reading. Use some admittance cleaner or brake cleaner to spray onto the wires to sever the dirt upon no account touch the wires like everything as they are extremely fragile
I don't have any check engine lights unless I unplug the MAF sensor. gone the MAF is plugged in after that the car will stall unless I put my foot on the accelerator. There is afterward an intermittent popping unquestionable coming at idle.