Check the hose clips for tightness and examine the trunking for any cracks or splits and also every the vacuum system, the little bore pipes and fittings for cracks and missing parts. The best exaggeration to find a leak is to have the engine supervision and warm and subsequently spray can lighter gas /propane or brake cleaner on each joint in turn. If the engine rev s happening 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 realize a quick malfunction find if you unplug the meter and control the engine without it. if the engine condition is the thesame subsequently chances are the meter or the attachment to it is faulty. Its furthermore worth cleaning the MAF sensor wires, as they can acquire coated in the same way as dirt beyond period which subsequently offsets the reading. Use some admission cleaner or brake cleaner to spray can onto the wires to remove the dirt upon no account adjoin the wires like all as they are extremely fragile
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