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Old 10-10-2014, 09:15 AM   #1
Scooby Newbie
Member#: 335906
Join Date: Oct 2012
Chapter/Region: NESIC
Location: Ct
2003 Subaru WRX

Default ringland ?

Hey guys just a quick question. Been chasing a stubborn p0304 on my 03 wrx for a year now. In that time ive changed plugs, coilpacks and switched injectors. Still nothing has changed. Well I finally did a compression test and all cylinders were fine around 130 (give or take a few psi). Can it still be a bad ringland? even though the compression is fine? Thanks!
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Old 10-10-2014, 09:59 AM   #2
Scooby Specialist
Member#: 167338
Join Date: Dec 2007
Chapter/Region: Tri-State
Location: new jersey
03 Bugeye


yes, you need to do a leak down test also. it can be one of the valves on that cylinder as well. not necessary bottom end.
snake32 is offline   Reply With Quote

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