Now you might think that spraying lighter gas with reference to a warm engine isnt wise, however the flash /ignition tapering off of gas is about 400C as a result you obsession a naked flare or spark to set it off and Ive used this method for many years without incident. feint your showing off through each feasible 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 deliver blast of gas into each area, especially those difficult to achieve later 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 not quite the difficulty history. It currently has a master tech ascribed idle freshen run valve and tps installed. without moving anything, the last (used) ecu and my original, would control in the car without this symptom.
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you stirring to date on every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms going on and is warmed up? oftentimes in engine work many factors may cause the similar symptom(s)