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Old 05-11-2015, 11:19 AM   #2
City: Full Time Cruising East Coast
Country: USA
Vessel Name: Meridian
Vessel Model: Krogen-42
Join Date: Aug 2011
Posts: 990
You could put a squeeze bulb before your Racor, pump it up and use soapy water sprayed on all the lines and fittings to see where the leak is. You could have a small crack in one of the lines. I had the same issue and found the inlet fitting to the lift pump was cracked, it would only leak when running. Also, when it happens, take the top off the Racor and see if the fuel level is low enough that air would get in the outlet. If so, the problem is upstream.

Regarding the fuel return. I believe it should go back to the tank otherwise it will be hot if it goes back directly to the engine.
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