Hello, I have repaired higher than 30000 vehicles in my career and I compulsion to question you questions in the past I am not there in person to stockpile facts, data, or to exam your vehicle. I may ask you to perform psychoanalysis in my stead. If assay is needed and you would rather not play testing, I can offer my best advice, Fuel pressure?
I started the car occurring this morning, it starts taking place and runs at 1750 and within a minute or suitably climbs more than 2500.. It is dispensation mild though, just exaggeration highly developed than it should be. I after that checked the throttle screw plate/return screw, on purpose turned it out and nothing changed. put it help to exactly where it was. No vacuum leak sounds and all links verified. I tone fine not quite them as I've been in there a bunch of times..
This could be a large vacuum leak ,with the MAF similar it is by yourself measuring the air that is getting once the MAF, for that reason if the intake manifold is sucking in ventilate the freshen to fuel ratio will be certainly out and cause the engine to stall. If MAF is disconnected the engine goes into a limp measurement and lets the engine run. taking into consideration carb cleaner vaporizer spray can in the area of the hissing similar to the engine dealing out and with you listen the engine stall or rev innovative there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.