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Piston slap when warmed up


Sarra

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Posted
Yeah, that familiar cold start sound is more persistent now, even after driving 35 miles, my motor still has piston slap. Is there something I can do about this? It's also smoking blue smoke on occasion. :spin:
Posted
I was going to say bottom end, but the blue smoke sounds like it is piston slap. I would say, use a thicker oil, something like 15W50, until things sound bad again... then it's time for a new engine! yay! It's fun, trust me. (But start saving now, seriously)
Posted

I am saving when I can, but bills suck. Planning on a 257 bottom end joined with the DOHC 2.5 top end I already have.

 

Maybe using royal purple 10 W30 oil wasn't such a good idea. I seem to be down a qt of oil, and it's only been 1,000 miles since my oil change. >_<

Posted

Some 2.5i's have piston slap, some don't. Subaru wouldn't do anything for most owners.

 

I had two. One slapped. I found Castrol High Mileage oil really cut down on the knocking noise.

 

The blue smoke ain't good, though. Do you get it when accelerating, or decelarating, or both?

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Posted
Some 2.5i's have piston slap, some don't. Subaru wouldn't do anything for most owners.

 

I had two. One slapped. I found Castrol High Mileage oil really cut down on the knocking noise.

 

The blue smoke ain't good, though. Do you get it when accelerating, or decelarating, or both?

 

I get little puffs of it when accelerating, and a big poof, then nothing when letting off the gas.

 

There's usually a sheen of fresh oil on the tail pipe too. >_<

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