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Coolant in one valve cover- Milky oil residue


laserchill

Member
Joined
Jul 17, 2010
Messages
20
Vehicle Year
1988
Transmission
Manual
Pulled a valve cover to find milky oil. It is not in other valve cover nor has it got in the crankcase (no coolant on dipstick). This is a new re-build...where did I go wrong?
 
Also, I was having to add a little bit of coolant every two days......but did not see any on the ground or exterior of engine.
 
Milkey crap in the valve cover is a sign of the winter! Humidity condensates in the engine from startup. After 50 or so miles the engine has had time to evaporate that condensation.
It is COMMON to find that milkey crap on the oil filler cap... scares the hell out of beginners.
As for adding coolant.. did you fill it properly in the first place? With the heater running?
MOST leaks are outside the engine.. After running it for 20 miles park it and crawl under with it with a light... STAY under there till you find that one drop of coolant..
Big JIm
 
ya, the milky residue on the cap is normal, if its a milkshake in ur oil pan, then u worry lol
 
using water

ok....took engine down to heads but did not remove heads......found pitting where lower intake and heads meet at water port.......put extra gasket material there while putting back together......still doing exact same thing

problem is....it is actually using water internally in the engine.....about a 1/2 pint every other day.........

also, I can hear it gurgle in the heater core with high rpms.....

any ideas??
 
also.....reason I found this was that temp guage would rise up and heat would quite working
 
Did you have the heads magna fluxed when you rebuilt it. It sounds like a cracked head or a bad gasket or maybe a freeze plug leaking. If the oil level is staying the same then your leak is external somewhere. Comfirm where it is leaking before you yank the heads it could be anywhere.
 
It could very well be the intake manifold gasket. If there was pitting, then that means you need a new lower intake manifold. I wish I had better news for you there. I've seen it leak there multiple times before. If it's slow enough then the water will get evaporated out and your oil level won't go up much at all. But the antifreeze will still be in the oil, ruining your bearings.

Make sure you have a good machinist to clean up your aluminum parts! I've had otherwise good aluminum intakes ruined when the machinist "media blasted" them and severely pitted the gasket sealing surface around the coolant passages.

Oh, and this is off topic, and no offence whatsoever, but for future reference, as it grates my nerves every time...

Quit = the act of ceasing some activity, or when something stops doing something.

Quiet = the lack of sound

Quite = wholly, or completely
 
remove the lower intake and apply a bead of ultra copper RTV around both sides of NEW intake gaskets around all 4 coolant ports
 

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