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03-16-2019, 08:58 PM
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#1 |
 Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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How would the coolant darkening relate to a blocked PCV valve?
I had a small block Chevy metal PCV valve clicking so loudly that I adjusted the valves on that side before discovering what it was. It wasn't dirty, and the same looking (and same acting, in hand) replacement PCV valve was quiet. |
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03-16-2019, 09:54 PM
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#2 | |
 
Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012
Location: Caledonia Ont.
Posts: 2,938
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Quote:
It may not necessarily be causing the coolant issue but it is the simplest thing to check and rule out so it should be done first
__________________
No one ever wants to give a Yaris the point by... 
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03-17-2019, 07:14 AM
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#3 | |
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Drives: 2008 Yaris 3DR Hatch MT Join Date: Dec 2018
Location: Harrisburg, PA
Posts: 80
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Quote:
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| brown coolant, burnt oil, decreased performance, engine noise |
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