hi all im new today i have problem with mu 03 leon cupra engine light on and when i put code reader on it says air mass meter bank 1 running lean ????
i changed air mass meter 3 months ago ???
so dont know what this could be
please help
yes it is ??? been looking under bonnet and you can hear hissing noise when car is running ???i think it may be some air leaking out of one of many breather pipes around in take manifold ???
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