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DBabbitt DBabbitt is offline
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Join Date: Sep 2017
Posts: 21
I replaced the 3 O-rings associated with the fuel distributor's pressure regulator and WUR poppet valve and am still leaking fuel, at the same rate as before, after shutdown back to the fuel tank. Takes an hour or so. I'm wondering if the seat at the piston end has a crack. The poppet valve O-ring was brittle and had to be whittled to remove/replace it. But it is the right side, by the piston of the pressure regulator, that I think I'm losing fuel after shutdown.

What is acceptable for volume to leak down? I know the pressure is supposed to slowly recede per Bentley, but how much volume of fuel is to leak by and from where? Can't be the midline of the main steel gasket plate. It is in the lower half of the fuel distributor.

One photo shows how to push the piston out after the bulk of the valve is removed. Do it via the supply fuel line to the WUR by feeding in a copper wire.




Last edited by DBabbitt; 10-26-2017 at 06:05 PM..
Old 10-21-2017, 08:25 PM
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