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Old 12-16-2010, 04:12 PM   #1
Scooby Specialist
Member#: 176991
Join Date: Apr 2008
OMGHi2U Does this sound like piston slapping? URGENT plz help!

HI, I have this very loud noise from my motor. I searched and some previous threads say it can be piston slapping or broken timing belt tensioner. Therefore, I removed the covers in hope it was only the tensioner but I dont think it is. Please let me know what you guys think. I need this car running smoothly.

Here is my video clip.


Two other videos I found with good and bad tensioners.

vutony is offline   Reply With Quote
Old 12-16-2010, 04:33 PM   #2
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Member#: 236927
Join Date: Jan 2010
Chapter/Region: NESIC
Location: Oakville CT
2015 BRZ 93 LEGacy33
1984 BRAT


Definitely not your tensioner, it is pretty solid in the video. Unfortunately, it sounds like you threw a rod or spun a bearing. Take off the oil pan and see if you can wiggle any of the rods around.
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Old 12-17-2010, 11:04 AM   #3
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Member#: 266119
Join Date: Dec 2010
Location: Indianapolis
2002 Wrx


Just went through this problem with mine. Come to find out it was my lower gear next to the water pump. The bearing inside the gear just exploded and caused slack in the timing belt. And yours sounds about like mine. It caused the tensioner to move more than normal make sure all bearings are inside of the gears. That's just my suggestion. Hope you get her fixed.
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Old 12-18-2010, 08:39 AM   #4
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Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
2003 GGA MBP
12.9 / 105+


sounds a lot like rod knock to me too. drain/flush the oil and check what you see in it.
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