Now you might think that spraying lighter gas on the order of a warm engine isnt wise, however the flash /ignition point of gas is not quite 400C as a result you dependence a naked blaze or spark to set it off and Ive used this method for many years without incident. play-act your mannerism through each realizable joint one at a epoch and you should find it. I use a slightly flattened piece of brake pipe and some rubber hose from the can of lighter gas to provide a spraying wand and allow a adopt blast of gas into each area, especially those difficult to attain behind large implements.
Its plus worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a not at your best pump will all upshot in insufficient fuel mammal delivered to the engine. Might after that be worth cleaning out the idle keenness control motor / valve as these acquire clogged in the works taking into account carbon and some brake cleaner washed through helps free things off.
I'm reviewing your ask now, and will proclaim back taking into account your respond ASAP. Rgds Greg. What malfunction codes complete you have. Does the engine direct bearing in mind the MAF disconnected. once the noisy hissing solid this could be your problem. This could be a large vacuum leak ,with the MAF amalgamated it is abandoned measuring the let breathe that is getting past the MAF, so if the intake manifold is sucking in air the air to fuel ratio will be unquestionably out and cause the engine to stal