2001 Chevy Malibu 3.1L rod knock

Vehicle had intake manifold gasket replaced, throttle body and IAC cleaned. It then started stall while test driving, followed by starting to make this noise. The day after this video was made, I moved the car into my driveway and it stopped running for good, refusing to turn over. Once I opened it up, found one of the pistons had disintegrated and a chunk of it got wedged in the crank. I also found the head of a valve. My best guess right now is that a valve seat dropped into the cylinder and started to rattle around until it broke the valve, which then busted up the piston. The engine in the car has since been replaced and now runs like a champ.

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ROD KNOCK!!! What it looks like inside the engine.
Check out rod bearings and pictures on Amazon HERE: http://www.amazon.com/gp/product/B007P73RZQ/ref=as_li_qf_sp_asin_il_tl?ie=U TF8&camp=1789&creative=9325&creativeASIN=B007P73RZQ&linkCode=as2&tag=httpww wyou00f-20 ROD KNOCK!!! What it looks like inside the engine. How to determine if you have rod knock by taking off the oil pan. This car is a 1996 Toyota Paseo 1.5 liter. The oil circuit for cylinder one got a piece of foil blocking it. The connecting rod on that cylinder died an ignominious death.





2000 Chevrolet Malibu 3.1L Engine Knock
I have a Malibu with what sounds like the famous piston slap, however it doesnt go away. I replaced the lifters because I had to replace a leaking intake gasket anyway. It has new plugs and wires and has always made the sound even before replacing them. It sounds like it's coming from the top of the engine however I am open to any and all diagnostics. Please leave a comment. Thanks





Result of Rod Knock
Result of Rod Knock. After pulling the engine there is a evident rod knock.





Attention GM 3.1L 3.4L and 3.5L Engine Owners
Newer versions of these engines don't make this sound because they have a special insulation in the block.




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