water in the oil or cracked block test

[swfleur]

Got some great advice today from the neighbor mechanic gear head

Tested for an internally cracked engine ...... this saves you time of wondering or hoping or guessing. This is only of you already had your internals contaminated with the milkshake of oil and water - ( like me and my pal Darrin Valdeez did yesterday

Simple test of the water jacket -

The highest point that water can be in your engine in normal running is the thermostat housing -

Pull the bolts and expose this cavity where the thermostat is - remove it - usually at the front and top of the engine above the water pump.

Pull the oil drain plug and drain out whatever oil was left in the engine - ( needed to do that anyway since the milkshake of water and oil was inside the valve covers and everything internal.

With the engine off and cooled and ( battery removed for safety - dang starter scares me ; )

Pour water into the thermostat housing on top side of engine - until it appears to be "topped off" - or let the garden hose trickle the water in and hang out and wait -

when water tops off inside thermostat housing - then stop adding water and let it sit - any cracks will allow water to seep in and drain out the oil plug screw on bottom side ( which you have already removed - right ? ; hint - hint )


now be looking for water to pee out of the oil drain hole in bottom of engine.

If water comes out your drain plug ( immediately or during the fill or 1 hour later - you got serious issues inside the motor - We did this on this motor and she is bad news.

Water poured right out of the oil drain hole - proof of some serious internal cracking

We lost the engine but gained a boat anchor

 

[darrincates]

Re: water in the oil or cracked block test

... and if your lucky enough, and no water comes out the oil drain, then you probably don't have serious issues like a cracked block?

Thanks for all your help Shawn ..... I owe you some sheetrockin'!

 

[Scott Danforth]

Re: water in the oil or cracked block test

many cracks only open up when the block gets warm.

your test would also have water pouring out the drain if you have a failed head gasket, failed manifold gasket, cracked intake manifold, cracked head or a cracked block. therefore the test is inconclusive for a definitive test for a cracked block, however is conclusive for something is awry and needs further discovery.