Now you might think that spraying lighter gas re a hot engine isnt wise, however the flash /ignition point of gas is virtually 400C for that reason you obsession a naked ember or spark to set it off and Ive used this method for many years without incident. work your quirk through each doable joint one at a epoch 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 manage to pay for a spraying wand and permit a direct blast of gas into each area, especially those difficult to attain taking into consideration large implements.
Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me tell you a tiny more about the hardship history. It currently has a master tech qualified idle expose direct valve and tps installed. without touching anything, the last (used) ecu and my original, would govern in the car without this symptom.
This could be a large vacuum leak ,with the MAF linked it is unaccompanied measuring the air that is getting considering the MAF, hence if the intake manifold is sucking in ventilate the ventilate to fuel ratio will be agreed out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. with carb cleaner vaporizer vaporizer in the area of the hissing considering the engine supervision and taking into account you listen the engine stall or rev complex there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.