Check the hose clips for tightness and examine the trunking for any cracks or splits and along with all the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best mannerism to find a leak is to have the engine supervision and hot and later vaporizer lighter gas /propane or brake cleaner on the order of each joint in turn. If the engine rev s happening you ve found your leak.
Might in addition to be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can accomplish a fast anomaly locate if you unplug the meter and govern the engine without it. if the engine condition is the same next chances are the meter or the association to it is faulty. Its after that worth cleaning the MAF sensor wires, as they can get coated subsequently dirt greater than get older which later offsets the reading. Use some gain access to cleaner or brake cleaner to spray onto the wires to remove the dirt on no account lie alongside the wires when everything as they are extremely fragile
I'm reviewing your ask now, and will read out urge on taking into consideration your answer ASAP. Rgds Greg. What defect codes do you have. Does the engine control like the MAF disconnected. behind the loud hissing unassailable this could be your problem. This could be a large vacuum leak ,with the MAF joined it is deserted measuring the ventilate that is getting gone the MAF, thus if the intake manifold is sucking in expose the let breathe to fuel ratio will be utterly out and cause the engine to stal
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