The bang is as good as a valve (as long as it stays there). Personal experience says that the hydro lock (with fresh water) in a diesel is not fatal. Might be somewhat different with sea water. Or if you let it stay there for a while.
Also clearing the water from a gas engine is simple (spar plugs); in a diesel you pray for the glow plugs (much easier to remove than injectors). Marek From: Della Barba, Joe via CnC-List Sent: Tuesday, January 30, 2018 10:37 To: cnc-list@cnc-list.com Cc: Della Barba, Joe Subject: Re: Stus-List Vented loop for engine above exhaust elbow? Or you can shove a bung in from the outside on a string ;) Our original huge Onan waterlift never flooded the engine despite some extreme weather. That finally rusted out and the replacement WOULD flood the engine until I installed a higher loop. Flooding is a PITA for an A4, but it can well be fatal for a diesel. Joe Coquina
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