[T3] Fuel Pump Output minus Fuel Used

[Jim Adney]

On 27 Feb 2011 at 18:55, Gary Forsmo wrote:

> *Jim ... are you saying
> 
> A.  "with the engine running?" .... or
> B.  "with just with the fuel pump running, by 'jumpering' (is that even a
> word?) the 12 volts to activate the pump?"  And tell me again: Where and
> what are the connectors?

I was thinking B, with just the fuel pump running.

> Where?  My guess is under the dash (left-hand side?) Fuel Pump Relay that
> clicks when the key is turned to RUN ... not START, right?

Right, just jumper the 2 red wires on that relay.

> Another interesting measurement (to me) might be:
> 
> Engine running at WOT, (two runs [opposite directions] 7,040 ft. = 1.333
> miles, on a level road, calm wind, tire psi at spec., etc.) and how much
> excess fuel is returned to the tank.

You could do that, but it's a lot harder and rather dangerous, 
running gas into a container inside the car during a high speed run.

-- 
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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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