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Old 03-14-2013, 12:14 PM   #19
Scooby Newbie
Member#: 249493
Join Date: Jun 2010
Chapter/Region: Tri-State
Location: Hoboken
2005 STi


It depends on the severity of the leak. For me, it started out only pushing gasses in under high boost and high engine loads. Day to day driving around town I never had issues. My coolant system would vacuum the coolant back in if I let it sit overnight after a problem occurred. As it went along it started happening more frequently and finally had a compression test, wherein I found out about the ring seals (60 PSI in #4 = no bueno). Get a compression test. If you do have HG issues solve them ASAP before you cause any further damage, new motors are not cheap.
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