Moddiction Posted October 9, 2013 Share Posted October 9, 2013 I'm doing a boost leak test. I didn't realize in this car you need to block off all vacuum lines it seems. Or some if them at least. Not familiar with Subaru engines yet as this is my first. Which lines need to be blocked off? Any pictures showing them by chance? Thanks. WWW.MODDICTION.COM Moddiction Stainless steel and Titanium shift knobs. Drivetrain, suspension, brakes, exhaust, cooling, fuel, gauges+MUCH more! Link to comment Share on other sites More sharing options...
Max Capacity Posted October 9, 2013 Share Posted October 9, 2013 Stick a pint size paint can in the hose coming off the air filter box. That should be all you need to do. Then give a short blast of air into the small hose off the BOV. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Moddiction Posted October 9, 2013 Author Share Posted October 9, 2013 I have a boost leak tester that goes into the air inlet right after the maf I am using to boost leak test. WWW.MODDICTION.COM Moddiction Stainless steel and Titanium shift knobs. Drivetrain, suspension, brakes, exhaust, cooling, fuel, gauges+MUCH more! Link to comment Share on other sites More sharing options...
Max Capacity Posted October 9, 2013 Share Posted October 9, 2013 Then you should be fine, give it a little pressure and listen for leaks. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Moddiction Posted October 9, 2013 Author Share Posted October 9, 2013 I still have to block off lines I believe it the crankcase fills with pressure. If I remove oil cap it all bleeds out of course but then the oil cap slightly leaking would mimic a boost leak. I can easily build 15 psi but then it bleeds off quick down to under 10 psi and then slowly down to zero. WWW.MODDICTION.COM Moddiction Stainless steel and Titanium shift knobs. Drivetrain, suspension, brakes, exhaust, cooling, fuel, gauges+MUCH more! Link to comment Share on other sites More sharing options...
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