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Again, this sounds exactly like how mine was acting when my balance chain tensioner broke and ate my crank sprocket. I would definitely remove the inspection cover, idle the car, and watch the water pump sprocket.

This is what it looked like on mine:

It should always be turning while the engine is running.
 

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His chains are all good....he had the front of the motor off to correct his whine issue after doing the waterpump....
 

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Discussion Starter #43
Again, this sounds exactly like how mine was acting when my balance chain tensioner broke and ate my crank sprocket. I would definitely remove the inspection cover, idle the car, and watch the water pump sprocket.

This is what it looked like on mine: https://www.youtube.com/watch?v=kDD1cvx-XaU

It should always be turning while the engine is running.
Sorry about not responding sooner. Here's a cool slo-mo video of the pump sprocket spinning: https://drive.google.com/open?id=12I0EaEdJEWHr_vYhNFRyeZc8c2dCPX48

Let me know if the link doesn't work.

His chains are all good....he had the front of the motor off to correct his whine issue after doing the waterpump....
As an engineer, I never take things like this for granted until I have the data to prove it.
 
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