eventoday Posted February 21, 2006 Share Posted February 21, 2006 hey i have a 97 outback with 181000. i had the sprocketed timing belt pulley blow. had to replace my heads. i ended up rebuilding most of the engine except pistons and crank. anyways i have new timing belt and pulleys. on cold mornings i hear a little i guess clatter sound. only when i give it a little gas. goes away when the car warms up. does that sound like a piston slap? any chance it could be an oil pump ? thanks jake Link to comment Share on other sites More sharing options...
cookie Posted February 21, 2006 Share Posted February 21, 2006 The best description I have heard was from somebody on Bobistheoilguy. He said his engine sounded like a woodpecker until it warmed up. It would almost be unusual if your engine did not have some piston slap. Link to comment Share on other sites More sharing options...
idosubaru Posted February 21, 2006 Share Posted February 21, 2006 is this 2.5 or can it also be in a 2.2 liter motor? Link to comment Share on other sites More sharing options...
eventoday Posted February 21, 2006 Author Share Posted February 21, 2006 i'm sorry it is a 2.5liter motor with the bucket style lifters and shims. which are all adjusted correctly jake Link to comment Share on other sites More sharing options...
idosubaru Posted February 21, 2006 Share Posted February 21, 2006 i'm sorry it is a 2.5liter motor with the bucket style lifters and shims. which are all adjusted correctly jake sorry jake, i was wondering if piston slap ever occurs with the 2.2 liter motor. Link to comment Share on other sites More sharing options...
Setright Posted February 21, 2006 Share Posted February 21, 2006 My old EJ22 - 1990 - never slapped. Most newer EJ's slap to some extent. I think the EJ25 are the worst, because of the bore to piston height ratio. The sound is similar to a Diesel engine. Clack--clack. Link to comment Share on other sites More sharing options...
soobcollektor Posted February 21, 2006 Share Posted February 21, 2006 My 95 EJ22 slaps when realy cold only for a short time though- 173,000 miles My 99 EJ22 slaps quite loudly until warmed up- 146,000 miles My 91 EJ22 never slaps regardless of temperature, 180,000 miles -Tim Link to comment Share on other sites More sharing options...
cookie Posted February 21, 2006 Share Posted February 21, 2006 Cold and how long it has had to drain back all the oil make a big difference in my 99 2.5. If I leave it a week it hammers quite loudly until warmed up and if it get in the high 30s here it is noisier. If I drive it after only sitting overnight in the 40s it only rattles for 30 seconds or so. I suspect if somebody had this car in Alaska it would really rattle until warm. Link to comment Share on other sites More sharing options...
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