There is a sencer on filter when did u last drain filter this sencer has two probes in side filter when there is water present it makes a connection and stops engine starting so water isn't injected to engine and running ur in ejectors on bottom of filters there shud b a large plastic knurled nut on the bottom filter to turn and drain out water it will b tight turn anticlockwise couple times until fuel runs out personally I would recommend changing filters because they do get clogged un less u have recently done so
Alan mech
September 2017
Talk to these people and see if their solution can help
http://www.remotekey.co.uk/vauxhall-movano/
Acp
August 2017
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