Block liner crack
Most cracked blocks will put the coolant into the crankcase and you would see a milky colored oil. Thoough it can also crack and allow the engine to burn the coolant. In this case, at the rate you are saying the overheating is occuring, you should easily be able to see white smoke from the exhaust.
More than likely than not the cylinder is pressuring the radiator causing the overheating, you can verify this by removing the radiator cap with the engine cold and placing the palm of your hand where the cap was. Start the engine, within less than a minute you will likely notice pressure building.
This can be caused by blown head gaskets, cracked heads or cracked block. The way to diagnose a cracked head/block is to disassemble it and send it to a machine shop capable of doing a magnaflux on the part.
It sounds like they stood behind thier repair and did the right thing with the second repair.
So your options are to pay to have a second shop diagnose the problem or believe the first and replace the engine and or car.
Sorry about your misfortune.
Nov 24, 2008 |
1995 Subaru Legacy