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milky oil

S

Stan Bainter

New User
Our F-14 engine has been completly rebuilt. After
running for approx 2-hrs, it has 6 ounces of water in the
crankcase. Changed oil and filter and measured
the water in radiator and after running again for 2-hrs it was again milky and radiator was down 6 ounces. Where do we start looking for the leak?
 
Because the coolant is getting into the pan, pull the pan and look for leakage around the base of the cylinder spigots (where the pistons disappear) and other areas. If it seams to come from the spigots area, it will need to have the seals redone in that area, or look for a crack in the block there. If it comes from above and is in the front cover area, or a drain to the pan from the head, it is possibly a gasket issue, or crack in the waterjacket. Was it a running engine before overhaul, and was the head given a crack check? JimN
 

I have had three different ways it has occurred with W-12 and F-12 motors. 1- head gasket leak 2- if I remember right some, not all of the the head bolt studs are wet and they can leak 3- rubber o-ring on piston sleeve. A good mechanic would have avoided such nonsense....tells you I did the work. Be patient, I have a motor I haven't talked to in 2 1/2 years.
Good luck!
 
Engine was not running before we did the overhaul that included new sleeves etc. Yes, we had the head crack tested and we retorgued the head between oil and filter change.
 
Pulling the pan is the next easiest, and most likely to find issues step.
The Orings in the spigots need to be carefully placed in very clean grooves with dish soap as the lube. Even little knicks in the rings will cause a leak, as will a bit of dirt in the groove. Good luck, JimN
 
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