Vehicle & Technical > Discovery

Hydro Locked Engine

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Fourby:
not really discovery specific, but seeing as it's most likley to happen in my disco... here goes.

Someone told me that if you hydrolock your engine you can roll the car backwards while in top gear and force the engine to spin in reverse, pumping out the water from the bores the way it came in.

 I can understand this as a principle, but was wondering if anyone has ever actually done it with any sucess???

Thrasher:
Er.....when you put the car in reverse ... it's the gearbox that is in reverse - NOT the engine. The engine always run one way ;-) If you put it in a forwards gear and push it backwards .... I'm pretty sure something would complain ;)

It's easier to pop the plugs ;-)

Oz:
Put a Snorkel on it :P

muddyjames:
Dont let a recovery man rock the car back in gear then tell you to turn the engine over. It just blows the pistons out the bottom of the engine. This happened in my rover 620 5-6 years ago :(

Just pop the glow plugs / spark plugs out of each cylinder and turn the engine over that way. DO NOT attempt a restart with the plugs in.

Skibum346:
Hydrolocking is water ending up above the pistons. When the piston comes up it compresses the water... but being water it'll only go so far. you MUST provide it with an exit or it will make it's own!  :shock:

It's a bit like sticking yer thumb over the end of a bicycle pump and pumping it... the air forces it's way past your thumb and heats up... no thumb... no problem!  :roll:

The correct method would be to remove the plugs as described and turn the car over on starter.  :idea:

Bear in mind... unless you have been incredibly lucky the damage will already have been done so it's probably gonna be a recovery job.  :(

Skibum

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