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Re: water in cylander heads,no visible cracks and no...
For water to get into all cylinder heads the head bolt tension is not as it should be. This comes from mainly 2 items . one is that the head is warped and is not tightening evenly and two the head stud holes are full of water and a hydraulic lock has formed before bolt tension was sufficient to hold the head down. If there is any water /oil or rust /gunk in the holes then the studs bottom out before attaining the proper head tension. Cracks can be under the exhaust valves
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Sounds familiar. If the engine oil is too full, oil will splash into the spark plug openings. Then, condensation will sit on the oil shorting the plugs. Be sure not to overfill. Also, the valve cover gasket has an inside seal. Once again, oil will partly fill the spark plug hole if the gasket is bad. There is a large hole in back of the valve cover leading right to the plugs. Be careful not to rinse the engine. Gaskets seal the plugs but water can sit on the plug openings.
Engine coolant that is disappearing and leaving no visible trace is NOT a good thing. You most likely have a blown head gasket or a cracked cylinder head. (engine coolant going out the exhaust) Also check your oil to make sure the water is not getting into your crankcase. If it is, the oil will be over-full and will look like a chocolate milk-shake.
If its just condensation in the oil cap or dipstick, to some degree its normal. However if you have water in the oil and its very creamy in texture, its probably a head gasket leak, or cracked head. Its important to get it repaired soon, or total engine bearing failure will result.
a cracked head or blown head gasket,will cause your vehicle to have a miss in the cylander where the crack is or where the gasket is blown. you can also see coolant leaking if the gasket is blown. you can also see water in the oil,and white smoke come from the exhaust.
to tell for sure that the head is cracked,and not just a blown gasket is to remove the head. you will instantly see if the gasket is blown. if its not,then turn the head upside down and look at the small space between the valves,as this is where 99% of cracks occur.
When checking for a blown head gasket, one of the most common tell-tale
signs is a milky-gray ring around your oil cap. When coolant enters the
engine oil through a crack in the head or through a blown gasket, it
evaportats and leaves a milky ring around the oil cap. Another easy way
to tell is to check your oil dipstick. Change your oil and pull out the
dipstick. Make sure that you take note of how far up the dipstick the
oil is. Top off your cooling system and fill your cooling resevoir to
the top. Screw radiator cap back on and start engine. Run engine for
about 20-30 mins. or until it reaches normal operating temperature.
Allow engine to cool (engine must cool completely to get accurate oil
reading!!). Check oil dipstick again. If the oil has a watery
appearence and has risen noticibly up the dipstick, the you probably
have a blown head gasket or a warped head. Also look for a dripping,
sweet-smelling liquid coming out of your tailpipe. Any of the above
symptoms could be the result of a blown head gasket. The easiest way to
tell is with a compression meter. This replaces the spark plug and lets
you know what compression each cylander is running at. If your
compression is abnormally low, then you have a blown head gasket or a
warped head. (note: consult repair manual for appropriate compression
of each cylander.)