...I had one of those "
Flo-Scan" meters on my 1970 Plymouth AAR 'Cuda 340/6BBL back during the OPEC Oil Embargo...it worked "sorta"...lots of problems with vapor locking & bubbles in their sensor...of course, 110-115ºF temperatures in Yuma, AZ, didn't help.
...did you also see this older posting?
http://ecomodder.com/forum/showthrea...tion-9297.html