A sensor for the FloScan system had gone rouge showing less than normal fuel flows and consequently crazy MPGs.
Did diagnostic trouble shooting with Joe at FloScan, he was helpful and easy to work and concluded the sensor between the Racor and the “Damper” was bad: Bottom of the picture, yellow cap.
I purchased a new one for $340 and finally installed it today.
It should have been a 1/2 hour job, but it took 4 hours, not unusual for my projects:

Had to hit the marine store twice due to lack of planning: Got new fuel hose, new solid band hose clamps and heat shrink. (Wrong size heat shrink, back to the store)
As usual it was challenging to work under deck, and as usual I lost something in the bilge had to retrieve it.
Pain in the rear, made sure I did this installation very, very careful so I don’t have to do it over again.
The old sensor was 20 years old, had to cut off the rubber fuel hoses rather than remove them.
Bled the system and ran the engine for 20 minutes, test ride tomorrow.
If anybody else had similar problems, let’s compare notes.
New sensor, new 3/8” fuel hoses, red clamp guard to protect the skin and to show which hose clamps are new and of the solid band, and which are not. (Continues maintenance and when everything is done, start over again.

Temporary plastic bag zip tied over connectors until I get proper heat shrink sorted out.
