Check the hose clips for tightness and inspect the trunking for any cracks or splits and then every the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best pretentiousness to find a leak is to have the engine giving out and hot and after that vaporizer lighter gas /propane or brake cleaner more or less each joint in turn. If the engine rev s occurring you ve found your leak.
Might next be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can get a fast oddity find if you unplug the meter and govern the engine without it. if the engine condition is the similar next chances are the meter or the membership to it is faulty. Its in addition to worth cleaning the MAF sensor wires, as they can get coated bearing in mind dirt more than times which after that offsets the reading. Use some get into cleaner or brake cleaner to vaporizer onto the wires to remove the dirt upon no account be next to the wires as soon as anything as they are definitely fragile
I don't have any check engine lights unless I unplug the MAF sensor. bearing in mind the MAF is plugged in after that the car will stall unless I put my foot upon the accelerator. There is along with an intermittent popping unassailable coming at idle.