slowflyin Posted October 11, 2018 Report Share Posted October 11, 2018 While chasing down an oil leak I discovered both the inter-cooler drain and sump drain check valves were seeping. New O- rings fixed the problem. Here’s my confusion, the check valve in the sump is down stream from the turbo only allows air out. Seems like under boost pressure would escape. The check valve for the inter cooler only lets air in. Seems like both positions would be treated the same. I’m sure I’m confused but I’ve learned not to assume things are correct. thanks in advance, joe Quote Link to comment Share on other sites More sharing options...
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