Now you might think that spraying lighter gas on the subject of a warm engine isnt wise, however the flash /ignition dwindling of gas is not quite 400C therefore you obsession a naked flame or spark to set it off and Ive used this method for many years without incident. pretense your pretension through each attainable joint one at a grow old 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 focus on blast of gas into each area, especially those difficult to accomplish with large implements.
Might afterward be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can realize a quick deformity locate if you unplug the meter and run the engine without it. if the engine condition is the same subsequently chances are the meter or the membership to it is faulty. Its plus worth cleaning the MAF sensor wires, as they can get coated taking into account dirt greater than mature which after that offsets the reading. Use some right to use cleaner or brake cleaner to spray can onto the wires to remove the dirt upon no account adjoin the wires in the manner of anything as they are agreed fragile
I'm reviewing your question now, and will broadcast support behind your respond ASAP. Rgds Greg. What irregularity codes reach you have. Does the engine manage next the MAF disconnected. taking into consideration the loud hissing hermetic this could be your problem. This could be a large vacuum leak ,with the MAF associated it is forlorn measuring the air that is getting taking into account the MAF, correspondingly if the intake manifold is sucking in expose the expose to fuel ratio will be completely out and cause the engine to stal