Check the hose clips for tightness and examine the trunking for any cracks or splits and plus all the vacuum system, the small bore pipes and fittings for cracks and missing parts. The best exaggeration to find a leak is to have the engine government and hot and then spray lighter gas /propane or brake cleaner roughly each joint in turn. If the engine rev s up you ve found your leak.
Might also be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can accomplish a fast aberration find if you unplug the meter and rule the engine without it. if the engine condition is the similar later chances are the meter or the link to it is faulty. Its furthermore worth cleaning the MAF sensor wires, as they can acquire coated following dirt over era which subsequently offsets the reading. Use some admission cleaner or brake cleaner to vaporizer onto the wires to separate the dirt upon no account be adjacent to the wires behind all as they are totally fragile
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