Quote:
Originally Posted by justatroll
Considering that when you shut off the car, the fuel pressure rail is probably above 1500 PSI, a leak could result in quite a bit of fuel.
Then if there is such a thing as an automatic "fuel pressure test" of some sort, that could dump even more fuel into the cylinder if the injector is the leak.
However the tank Fuel Pump would not get the DI fuel rail back above 1500 PSI by itself.
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But is there enough fuel in the rail to flood the cylinder enough to hydrolock? Without the HPFP operating it isn't like the fuel in the rail would be replaced or maintain high pressure through an open injector for long.
The theory is sound except for those couple of points that keep nagging at me.