Now you might think that spraying lighter gas a propos a hot engine isnt wise, however the flash /ignition tapering off of gas is virtually 400C hence you dependence a naked flame or spark to set it off and Ive used this method for many years without incident. accomplish your pretentiousness through each realizable joint one at a times and you should locate it. I use a slightly flattened piece of brake pipe and some rubber hose from the can of lighter gas to offer a spraying wand and permit a tackle blast of gas into each area, especially those hard to achieve once large implements.
Might as well as be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can accomplish a fast aberration locate if you unplug the meter and control the engine without it. if the engine condition is the thesame subsequently chances are the meter or the association to it is faulty. Its then worth cleaning the MAF sensor wires, as they can get coated next dirt higher than era which next offsets the reading. Use some retrieve cleaner or brake cleaner to spray can onto the wires to surgically remove the dirt on no account adjoin the wires past whatever as they are totally fragile
This could be a large vacuum leak ,with the MAF linked it is by yourself measuring the air that is getting gone the MAF, therefore if the intake manifold is sucking in ventilate the freshen to fuel ratio will be no question out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. once carb cleaner spray spray in the place of the hissing in imitation of the engine handing out and like you hear the engine stall or rev vanguard there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.