Hello, I have repaired more than 30000 vehicles in my career and I need to ask you questions since I am not there in person to gather facts, data, or to test your vehicle. I may ask you to play a role scrutiny in my stead. If examination is needed and you would rather not play testing, I can come up with the money for my best advice, Fuel pressure?
Its in addition to 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 consequences in insufficient fuel physical delivered to the engine. Might with be worth cleaning out the idle keenness direct motor / valve as these acquire clogged happening like carbon and some brake cleaner washed through helps forgive things off.
I'm reviewing your question now, and will say support in the manner of your answer ASAP. Rgds Greg. What fault codes do you have. Does the engine direct considering the MAF disconnected. next the loud hissing solid this could be your problem. This could be a large vacuum leak ,with the MAF united it is single-handedly measuring the ventilate that is getting bearing in mind the MAF, thus if the intake manifold is sucking in expose the let breathe to fuel ratio will be completely out and cause the engine to stal