Quote:
Originally Posted by GH85Carrera
I would bet that Porsche designers and engineers worked on the drain back issue for a while. Since it cost twice as much for two nozzles, there must be a valid reason of the bean counters in at the time would have said use just one.
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I look at it and think "that's an overly complicated system for getting fluid on the windshield" I'm tempted to just put one check valve at the pump and see how it goes. I guess these check valves are known to fail if they go unused for a period of time or they require cleaning. Either way their location makes them a PITA to get at for any sort of service.