Check the hose clips for tightness and inspect the trunking for any cracks or splits and then 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 management and warm and after that vaporizer lighter gas /propane or brake cleaner as regards each joint in turn. If the engine rev s in the works you ve found your leak.
Might moreover be worth checking the wiring and connector to the airflow meter for any signs of corrosion or damage. you can complete a fast defect locate if you unplug the meter and control the engine without it. if the engine condition is the similar next chances are the meter or the connection to it is faulty. Its next worth cleaning the MAF sensor wires, as they can acquire coated in the same way as dirt greater than become old which next offsets the reading. Use some approach cleaner or brake cleaner to vaporizer onto the wires to sever the dirt on no account adjoin the wires later all as they are definitely fragile
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