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Water Pump? Metal flakes in coolant.


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I was excited I got my rebuilt vf46 back from JMP about a week ago. Got it all installed and went to burp the system. No weird noises, no smoke, no leaks, I was happy.

 

I noticed aluminum flakes floating up into the funnel from the turbo reservoir. I am thinking maybe the water pump?? I did check with JMP and he confirmed nothing to do with the turbo.

 

The coolant has been replaced at least 5 times over 100k miles. I have never used leak stop, but did use the Subaru conditioner last time, but not this time.

20210712_150055_copy_742x1005.thumb.jpg.0e85c82d7508a7e999a9486a9a4b345a.jpg

Edited by gimpydingo
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Does the engine make any weird noise? I'd probably drain and flush the system to eval how much metal is there.

2005 LGT Wagon Limited 6 MT RBP Stage 2 - 249K

2007 B9 Tribeca Limited DGM - 272K

SOLD - 2005 OB Limited 5 MT Silver - 245K

SOLD - 2010 OB 6 MT Silver - 205K

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There were very few flakes. Pretty much all shown in the pic. I flushed/ran with distilled water a few times and filtered the contents.

 

Anyway got everything buttoned up, took for a spin. Sounds and feels good.

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