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Old 04-07-2008, 12:08 AM   #1
Scooby Newbie
Member#: 81982
Join Date: Feb 2005
Chapter/Region: MWSOC
Location: Jackson, MI
2005 WRX STI
Crystal Grey Metalic

Default Cooling system problem

Coolant is not returning to the engine from reservoir after cooling down. For city driving, it can still recirculate but not highway driving. After driving on the highway, I can see a lot of bubbling in reservoir tank. I can see some particles like carbon dust and color change of coolant. Is there any way, I can find out which bank is injecting exhaust gas in the cooling system?
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