Topic: Piston slap?

[colbs]

Hey guys,  I believe I asked this before but the more I read and listen it makes me unsure.  I have a 02 fforester with 333,000kms on it.  Huge maintenance was done from the previous owner with over 7gs in mmaintenance. Synthetic.  Mobil 1 5-30 every oil change. When I start my Subaru in the morning I can barely hear or just not hear any piston slap.  When it warms up and the idle drops to normal, that's when the slap comes.  I'lltry and load up a video of the sound. It ssounds like the back drivers side almost.  Could it be valve chatter? I've had a few gms that has the chatter and it's nothing likethis. GGrant you this is a Subarulol. 

[colbs]

A video,  hopefully the link works!

[Jay89]

Piston slap generally only occurs when the engine is cold. If you have sounds after warm up its probably something else.

[colbs]

The engine is warm in that video.  I've put 8,000kms on this since I bought it. Went to Edmonton and back to Winnipeg. Burns very little oil.

[lophilip]

It sounds like valve chatter....... but....... I wouldn't trust me.

If there's a show, Canada's worst mechanic I should be on there.

[SausageCat]

Had it on my 03 Forester with 170k+. Changed oil brand and it went away. It was a long time ago and I don't remember what type of oil I ended up using but it was definitely dino.

[colbs]

I changed to rotella t6 15-40 and there's still no sound difference. I adjusted the valves and there's still no sound difference. The sound becomes more apparent when the idle lowers to its normal range.

[Stealthbombing]

Subaru's have noisy valve trains, STi's are by far the noisiest. Boxer engines make all kinds of weird sounds.  When you hear knocking that's when you need to worry

[colbs]

I believe when I put it in first and slowly start engaging the clutch and giving it gas when I start driving I hear a very low knock. Different than the noise in the video. Since that video I've probably put on 20,000kms