Now you might think that spraying lighter gas on a warm engine isnt wise, however the flash /ignition point of gas is virtually 400C fittingly you habit a naked flame or spark to set it off and Ive used this method for many years without incident. act out your habit through each practicable joint one at a epoch 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 dispatch blast of gas into each area, especially those difficult to reach later large implements.
Its furthermore worth getting the fuel pressure checked as if this is low due to a blocked filter or faulty regulator or even a in poor health pump will every repercussion in insufficient fuel creature delivered to the engine. Might also be worth cleaning out the idle promptness rule motor / valve as these get clogged up considering carbon and some brake cleaner washed through helps free things off.
This could be a large vacuum leak ,with the MAF aligned it is by yourself measuring the let breathe that is getting with the MAF, therefore if the intake manifold is sucking in air the air to fuel ratio will be enormously out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. in the manner of carb cleaner spray spray can in the place of the hissing once the engine management and afterward you hear the engine stall or rev well ahead there is the leak ,could be a bad vacuum hose bad gasket on the manifold.