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Old 08-05-2012, 10:47 PM   #1
Charlton
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Default EJ25 Head Gasket Failure

Just bought a 152000 mile Forester with a EJ25.

When do the head gaskets fail typically?

What are the symptoms of a failing head gasket?
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Old 08-05-2012, 11:49 PM   #2
J.Gibbs
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Quote:
Originally Posted by Charlton
Just bought a 152000 mile Forester with a EJ25.

When do the head gaskets fail typically?

What are the symptoms of a failing head gasket?
What year is the foz?

They usually go before that. as early as 60k they start to fail. I had 180k on my forester before I HAD to change them.

You can look for bubbles in your coolant overflow tank. Also you can have a test done to see if there are exhaust gases in the coolant.

One sign of major headgasket failure is oil weeping and dripping from the underside of the engine where the head and block meet.

Has the timing belt been replaced yet?
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Old 08-06-2012, 07:35 AM   #3
Charlton
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It's a 2002. Just bought the car so have no idea of service history.
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Old 08-06-2012, 10:39 AM   #4
Cefaln452
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look where the heads meet the block. if they are all gooey and have oil all over them they are bad.

just did mine on my beater. if you do the valve seals, machine heads, timing belt/wp should run you under 1k if you do it yourself
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Old 08-06-2012, 10:42 AM   #5
Bluefoton
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now with a HID retrofit

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100k is the *usual* fail midpoint, though with a huge statistical variance . If you don't have a service history, you'd better do some serious maintenance on it, especially the timing belt/ idler pulleys. If that fails = $$$$.
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Old 08-06-2012, 12:00 PM   #6
Charlton
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Local Subaru dealer said around $2K to replace head gaskets. I might try calling around dealerships and seeing if they can pull service history off the VIN #.
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Old 08-06-2012, 12:04 PM   #7
Charlton
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Quote:
Originally Posted by Bluefoton
100k is the *usual* fail midpoint, though with a huge statistical variance . If you don't have a service history, you'd better do some serious maintenance on it, especially the timing belt/ idler pulleys. If that fails = $$$$.
What are symptoms of issues with timing belt and idler pulleys?
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Old 08-06-2012, 02:19 PM   #8
kyle234
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you're not really going to see any symptoms. best thing to do is pulling the drivers side plastic and take a look its only 3 bolts and you should be able to tell if the belt has been replaced recently.
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Old 08-06-2012, 04:11 PM   #9
Bluefoton
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now with a HID retrofit

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None until they fail - and their failure is usualy catastrophic as we have interference engines. Common NASIOC wisdom suggest always replacing the pulleys with the timing belt just to play it safe.
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