Now you might think that spraying lighter gas almost a warm engine isnt wise, however the flash /ignition point of gas is not quite 400C hence you need a naked flare or spark to set it off and Ive used this method for many years without incident. undertaking your quirk through each feasible joint one at a time 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 allow a lecture to blast of gas into each area, especially those hard to achieve in the same way as large implements.
Its as a consequence worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a ill pump will every repercussion in insufficient fuel visceral delivered to the engine. Might after that be worth cleaning out the idle quickness run motor / valve as these acquire clogged going on afterward carbon and some brake cleaner washed through helps free things off.
I don't have any check engine lights unless I unplug the MAF sensor. bearing in mind the MAF is plugged in after that the car will stall unless I put my foot on the accelerator. There is as well as an intermittent popping hermetic coming at idle.