Now you might think that spraying lighter gas nearly a warm engine isnt wise, however the flash /ignition reduction of gas is about 400C correspondingly you craving a naked flare or spark to set it off and Ive used this method for many years without incident. measure your mannerism through each practicable 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 find the money for a spraying wand and permit a attend to blast of gas into each area, especially those difficult to attain afterward large implements.
Might in addition to be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can pull off a quick idiosyncrasy locate if you unplug the meter and run the engine without it. if the engine condition is the same then chances are the meter or the association to it is faulty. Its moreover worth cleaning the MAF sensor wires, as they can get coated with dirt higher than become old which subsequently offsets the reading. Use some get into cleaner or brake cleaner to vaporizer onto the wires to cut off the dirt on no account lie alongside the wires considering everything as they are extremely fragile
This could be a large vacuum leak ,with the MAF united it is by yourself measuring the freshen that is getting later the MAF, hence if the intake manifold is sucking in let breathe the let breathe to fuel ratio will be categorically out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. following carb cleaner spray vaporizer in the area of the hissing taking into consideration the engine executive and as soon as you listen the engine stall or rev forward-looking there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.