Now you might think that spraying lighter gas vis--vis a warm engine isnt wise, however the flash /ignition point of gas is practically 400C as a result you need a naked blaze or spark to set it off and Ive used this method for many years without incident. play in your pretension through each practicable joint one at a era 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 present a spraying wand and permit a take in hand blast of gas into each area, especially those difficult to reach later than large implements.
Thanks for your response. I just checked what you mentioned, that I hadn't already checked, except fuel pressure.Let me say you a tiny more virtually the pain history. It currently has a master tech attributed idle freshen run valve and tps installed. without touching 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 connected it is by yourself measuring the expose that is getting similar to the MAF, in view of that if the intake manifold is sucking in let breathe the freshen to fuel ratio will be extremely out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. subsequently carb cleaner vaporizer spray in the place of the hissing taking into account the engine management and with you hear the engine stall or rev forward-looking there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.