Got a customer in today says he went through a deep puddle and his td5 started to misfire.Thought it had hydrauliced checked air filter -bone dry no excessive amount of water under bonnet, no smoke from exhaust .Code read and came up with 3 or 4 codes relating to inj charge times and inj open circuits, cleared ran perfect for 10 seconds then dropped a cyl or two on idle and throttle with returning codes for 1 inj (have left codes at work)only diag equip we have is snappy scanner is there any point in investigating further or shall i just save heart ache and send to dealers, could this be the oil in the inj loom inside r/box.Not looking for silver bullet!! just a bit of advise.We are thinking of buying decII might have been a good idea this time. Regards John