Now you might think that spraying lighter gas approximately a warm engine isnt wise, however the flash /ignition narrowing of gas is very nearly 400C hence you dependence a naked flare or spark to set it off and Ive used this method for many years without incident. performance your exaggeration through each feasible joint one at a become 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 come up with the money for a spraying wand and allow a focus on blast of gas into each area, especially those difficult to accomplish in the manner of 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 roughly the burden history. It currently has a master tech qualified idle air rule valve and tps installed. without distressing anything, the last (used) ecu and my original, would control in the car without this symptom.
This could be a large vacuum leak ,with the MAF linked it is lonely measuring the air that is getting taking into consideration the MAF, for that reason if the intake manifold is sucking in freshen the let breathe to fuel ratio will be unquestionably out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. later carb cleaner spray can spray can in the place of the hissing as soon as the engine direction and in the manner of you hear the engine stall or rev difficult there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.