Starboard side Raycor always needs topping up before staring

[Shaunc]

MY Raycor on the Stbd side always need to be topped up before I run the engine.

I have checked the seals and nothing seems to help. I am thinking of going to a larger micron filter next.

Anyone with any ideas?

[Finalee]

The fuel is either leaking out somewhere or being siphoned back into the tank. Tell us more. How long has it been going on, and has there been any recent work performed.

[Avenger]

Racors are fabulous air traps. It could be the Racors itself or it could be anywhere from the tank to the Racors. Clear tubing is an excellent temporary fuel hose for isolating air leaks.

[Andy B]

Did you replace the check ball and seal in the racor and if so is it installed correctly?

[Scarlett]

Had same problem, rebuilt Racors, no help, then I started turning off fuel tank valves after every run, that did it, have now installed check valves in fuel lines near Racors as backup. Hatteras boats with keel fuel tanks are more prone to this than boats with wing tanks outboard of engines at about the same level as the engines. John

[Shaunc]

All I have done is changed the filters. Had my Detroit guy look over the fuel hoses and no signs of any leaks. He did sau next time we need to start looking at the Racor filter itself. I was hoping to help narrow down some options to work on.

May have to do what Scarlett suggested and close off the filters to see if that helps.