Originally Posted by Guy
A little water is not going to hurt anything. Just bleed the system normally.
There is a reason we have such things as factory procedures. Water under pressure is denser than oil
or fuel under pressure, thus the reason an engine stops, as opposed to hydrolized fuel just blowing through the engine. Or when there's a sufficient quantity of water to cut off "fuel" supply all together.
We always treat for total fuel cutoff, as it's worse case scenario. Assuming "just a little water" can net in damage to pump seals
or blown injectors. I have responded to far too many disabled craft where someone has followed the advice of someone else who said "a little bit of water never hurt anything", only to tell the poor fellow he's blown the tip off of an injector, or his pump seals
are now blown out, and time to overhaul
. This is reckless backyard procedure.
In the case of total fuel cutoff, there may be a sufficient concentration that the stress created by water compression
exceeds internal limits. A gross over comparison would be the difference in compression
density when compressing air, and then compressing oil
. Note I said gross over comparison, and not like comparison, but you get my point, right?
pumps are very tough, within their intended environment
. Yes, that includes the assumption water will get in the system quite often, and shut it down. SHUT IT DOWN, and not continue to try and run under compressed water. Following procedure to restore operation nets in no damage. Forcing the issue by not following procedures is not intended, and on new motors voids warranties.