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I know its not Subaru related but its been ticking in my mind for past 24 hrs...

Yesterday was with 3 of my mates in their 4WDs went for a drive down the back in Sunshine, 3 big ones (Toyota HiLux, Surf & 2002 3 litre V6 Ford Escape) and myself in the Liberty, they went thru approx 500mm deep water a couple of times (I refused to enter because i knew how deep one section would be but had fun in mud etc) anyway my mate in Ford Escape went thru a bit too fast, some how the water got sucked into the engine and flooded it and he didnt realise how low the air intake pipe was, last night opened up the inlet manifold and sucked out the water with the vacuum, then we turned over the engine then clunk... engine wont move, even wont turn over, I did anti clockwise the engine - it moved back, but moved clockwise then it stopped one point, it clicked in my mind that one of the valves is bent.. so put the engine's manifold etc back together and leave it for the mechanic's...

What can happen once water gets in the engine - whats the symptoms? what is the best way to deal that matter? and what are the worst cases?

I just wanted to know if I did the right thing etc...
Cheers
AP

the engine hydrulctes as such this is when the engine fills up with water the first thing i would do is remover the spark plugs or glow plugs and wind the engine over to blow any water out of the bore


hope this helps

tristan

and after that spray heaps of crc down the bore

Done that, I used WD40 in it... pulled sparkies out the very first thing, then WD40 in, engine will only turn around approx 290° not 360° thats where it stops feels like hitting the valve, btw its automatic.
Cheers
AP

If a lot of water got into one of the bores it is possible that a connecting rod (or in a bad situation- rods) was bent or even broken and is fouling against another part within the crankcase.
Water doesn't really compress like air does....
Sounds expensive, but I must say good foresight on your behalf for NOT attempting said swamp.

you'll notice the air filter does a really nice job of filtering water before it hits the intake manifiold.

I have seen bent conrod in CRV that did just this, sump off, head off, new conrod and piston and associated gaskets and Vroom & away. The conrod can jam against the lower part of the bore.

also seen a twin carb Laser do this and engine still rotated and run, albeit a little rough for the change in stroke!!

99% likely New Motor, simple
these ones dont like water at all,

looks like he busted his engine... yeah possible needs new conrod.. its under warrenty.. but hmmm... Will get back when he tells me updates..
Cheers
AP

$2800 later, new 2nd hand engine. He bent the pistons (two or 3 of them, not sure), bent conrod and 1 bent valve. Engine isn't same what it was before, expensive lesson for him! He swore to me, "I'm not going off road or go thru water/mud etc" its sad that a mate has pulled out... but fair enough and yeah its a tough lesson!
Cheers
AP