Current vehicle of question: 1999 Outback Wagon, 2.5l DOHC, 120k, Second owners...
This is a friend's car that I'm helping out with, and am hoping to get some good insight. Knew that this would be the place.
The car was bought last October, and has had 9000 miles put on it by a very calm and
defensive driver... They started noticing the thermostat
indicating it getting hot. After watching it, they noticed the coolant
was low, and that they needed to add. Then they noticed air being forced
into the coolant reservoir. They took it to a few independent subaru
shops, and got the same answer: Blown Head Gaskets, and bad Viscous
Coupler (for a different post....).
So we pulled the motor, and started getting the heads off. It had the old style HG
were both bad My question has to deal with the driver side head in particular...
While taking the intake camshaft retainers off, a pressurized aqueous
solution squirted out at us from under the retainers. Also, two of the
camshaft retainer bolts were heavily corroded. Is this a sign of a
cracked head? I plan on submerging the head in a tub of water, and
spraying compressed air into the retainer bolt holes. If there are bubbles
from anywhere, I'm assuming the head is bad? Should we be concerned
with the block internals being compromised? How much should another head
cost, and should they just slap a 2.2L in there (I'm in favor...)?
The oil that we drained from the pan is not chocolaty/frothy. And there was
maybe a gallon of coolant that drained out of the system.
Edited by suprunner, 17 August 2013 - 09:53 PM.