Engine Coolant Overflow Full At "hot" Reading When Cold

[KDestroyer]

Hello Gents,

Just had the transmission completely rebuilt and car is coming along pretty well. When I got home from my 10 mile journey and parked, I smelled coolant. Upon inspection, noticed the coolant level really high and what appears to be leaking around the radiator cap at some point. The car is cool now, about 3 hours and the coolant has not retreated back........ The reading has always been somewhat off: COLD reading at COLD temp and COLD reading at HOT temp. Anyone else have these symptoms before? Any advice helps.

Thanks!

 

[mikestang63]

replace the cap with a stant safety lock 16# unit

 

[KDestroyer]

replace the cap with a stant safety lock 16# unit

Done. New cap. Let car warm up and the coolant level raised, and darkened in color.

Good news, I think I know where the oil has gone. Head gasket? Block?

 

[mikestang63]

What is your oil pressure like? Remember oil pressure is 30-50 while coolant is 16. your oil is being pushed into your coolant Do you have any oil pressure and does it drop when you rev the motor or put a load on it.
Did you drain the oil? Any water in the oil at all.

Time for a leak down test - my guess is it's a blown HG or a cracked block/head/ oil passage by a coolant hole.