Question about 1990 Subaru Legacy
I just put new water pump and timing belt on. I have bled the system over and over and tried taking the thermostat out. Engine operates at normal temp while driving around town for about 15-30 minutes, and then temp rises to extreme hot on gauge. I am thinking a blown head gasket because of constant bubbles appearing when radiator cap is off. I am ready to pull the engine and heads, but I am wondering if there is anything else that could be causing this problem.
Was the water pump brand new or rebuilt? I have seen rebuilts fail on the first test drive.
Before pulling the head, I would take it to a shop and request a CO2 test to check for combustion gasses in the cooling system. Shouldn't cost more than $30 and is a pretty definative test.
Posted on May 18, 2009
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Posted on Jan 02, 2017
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