Andrew Willcox Posted January 3, 2020 Share Posted January 3, 2020 Having removed the inlet manifold from my K series Caterham I was surprised to find a "leak" of fuel from the return line. Struggling to understand what would create a back pressure through this line and wondering if it is a symptom of a problem else where in the fuel system.Manifold is back on now, just wondering if anyone has experienced the same and can offer any explanation? Link to comment Share on other sites More sharing options...
revilla Posted January 3, 2020 Share Posted January 3, 2020 A blockage downstream of the point of the leak would do it. Or general positive pressurisation of the whole fuel system as things warm up if you have a one-way valve in the breather? Link to comment Share on other sites More sharing options...
Andrew Willcox Posted January 3, 2020 Author Share Posted January 3, 2020 The one way valve on the breather would make sense! So as the temperature rises through the day a pressure builds in the tank and pushes fuel through the return line. Haven't checked but I'm sure the car will have one...Thanks Link to comment Share on other sites More sharing options...
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