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Loud chattering when cold starting 92 Sub Loyale


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Just bought a 92 Sub Loyale Automatic 4x4 with 87k. When I cold start it there is a loud chattering noise that eventually goes away. There seems to be three stages of noise it makes as it warms up and I have a recording of it on youtube.

 

 

This is my first Subaru and was wondering if this is normal.

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It's probably the lifters bleeding down and then pumping back up after the engine runs for a bit. You can try cleaning them by putting a quart of dex/merc ATF in and a new oil filter on and driving for a week, then doing a full oil change. ATF has a lot of detergents in it, so it will help clean out sticky lifters.

 

If it ticked all the time, it would probably be air in the oil from a leaking oil pump gasket (the "mickey mouse" gasket because of it's shape).

Edited by WoodsWagon
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