Now you might think that spraying lighter gas around a warm engine isnt wise, however the flash /ignition tapering off of gas is virtually 400C thus you habit a naked ember or spark to set it off and Ive used this method for many years without incident. perform your pretentiousness through each possible joint one at a mature and you should locate it. I use a slightly flattened fragment of brake pipe and some rubber hose from the can of lighter gas to give a spraying wand and permit a direct blast of gas into each area, especially those hard to reach considering 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 little more approximately the misery history. It currently has a master tech certified idle freshen govern valve and tps installed. without moving anything, the last (used) ecu and my original, would run in the car without this symptom.
This could be a large vacuum leak ,with the MAF associated it is and no-one else measuring the freshen that is getting taking into account the MAF, therefore if the intake manifold is sucking in freshen the expose 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. behind carb cleaner vaporizer spray in the area of the hissing later than the engine organization and when you listen the engine stall or rev innovative there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.