pgswiii Posted April 7, 2018 Share Posted April 7, 2018 Hey everyone - I have a 2006 Impreza wagon. Last oil change, the mechanic brought me over and pointed out this circular piece. Said it was leaking fuel, but that it might be easy to fix myself. My problem - I have no idea what it's called, where to find it and if it's safe to fix myself. I'm worried about any pressure build-up, etc. Any ideas? Thanks in advance for the help! Link to comment Share on other sites More sharing options...
matt167 Posted April 7, 2018 Share Posted April 7, 2018 Fuel pressure regulator. Cheap and easy Link to comment Share on other sites More sharing options...
Fairtax4me Posted April 7, 2018 Share Posted April 7, 2018 It's not a regulator, it's a pulsation dampener. Dealer only part. 3 Link to comment Share on other sites More sharing options...
idosubaru Posted April 8, 2018 Share Posted April 8, 2018 I’ve never seen those leak, is that an outlier or certain year thing? could it be a hose connection? If they’re pricey, I wouldn’t hesitate to install a used one, they don’t have any measurable failure rate unless it’s some specific year model thing I don’t know about. Link to comment Share on other sites More sharing options...
Mike104 Posted April 8, 2018 Share Posted April 8, 2018 It almost looks like brake fluid spilled and wrinkled the paint 1 Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted April 9, 2018 Share Posted April 9, 2018 Pretty sure I have read 2 or 3 instances of those leaking. Not common - though perhaps as these cars age we will see this more often? Link to comment Share on other sites More sharing options...
Fairtax4me Posted April 9, 2018 Share Posted April 9, 2018 Ethanol in the gas degrades the rubber diaphragm seals inside. This will become very common as we see these cars getting older. 1 Link to comment Share on other sites More sharing options...
GeneralDisorder Posted April 9, 2018 Share Posted April 9, 2018 You can just delete it. It won't make any noticeable difference not having it. GD Link to comment Share on other sites More sharing options...
GeneralDisorder Posted April 9, 2018 Share Posted April 9, 2018 (edited) Ethanol in the gas degrades the rubber diaphragm seals inside. This will become very common as we see these cars getting older. There is no rubber in those. It's just an open expansion chamber. Also - pretty much all fuel systems today use neoprene based components that are impervious to Ethanol. GD Edited April 9, 2018 by GeneralDisorder Link to comment Share on other sites More sharing options...
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