Check the hose clips for tightness and examine the trunking for any cracks or splits and next all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best pretension to locate a leak is to have the engine presidency and warm and then vaporizer lighter gas /propane or brake cleaner on each joint in turn. If the engine rev s up you ve found your leak.
I started the car in the works this morning, it starts going on and runs at 1750 and within a minute or in view of that climbs beyond 2500.. It is doling out smooth though, just artifice highly developed than it should be. I furthermore checked the throttle screw plate/return screw, with intent turned it out and nothing changed. put it incite to exactly where it was. No vacuum leak sounds and all friends verified. I quality fine about them as I've been in there a bunch of times..
This could be a large vacuum leak ,with the MAF joined it is isolated measuring the ventilate that is getting following the MAF, hence if the intake manifold is sucking in let breathe the ventilate to fuel ratio will be very 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 same way as carb cleaner spray can vaporizer in the place of the hissing afterward the engine government and gone you hear the engine stall or rev innovative there is the leak ,could be a bad vacuum hose bad gasket upon the manifold.