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Darn 20 pages and 50 pages of research and no answer to fuel flow meters...
I have 3 Zemcos (mine are the Cal Custom versions) with the ball flow sensor.
I ran one for a couple of years in a 94 Chevy Van with a carb and it seems to work fine and matched my tanks MPG readings.
I just went though a lot of trouble rigging a external fuel pressure regulator on my 93 Chevy van's TBI and putting a Zemco flow meter between the reg and the TBI with a fuel pressure gauge and a vacuum needle valve to allow my lowing the fuel pressure along with a control on the map sensor...
I did this because the MPGunio seemed to be unable to read the injectors and give real time MPG readouts.
So I am much less happy to read how these do not work right...and worst that IF I should really get better MPG these will fail at the lower fuel rates...
Darn darn.
I clearly remember some of my long road trips and coming down some tall mountains and seeing idle readings (foot off gas) and reading very high MPGs....it seem able to handle low fuel flows then.
My goal has been to get a car to run at as near idle fuel usage as possible... on my 2000 Ford that would be around .45 gals per minute which seems to read around 75+ MPG at 70 MPH. (seen in some down hill runs with a MPGunio and a Scann gauge II)
So does these flow meters fail at these levels of flow or are you talking at a much lower flow??
Rich
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