Bosch Fuel Pump

[Greg Hermann]

>Actually, fuel should be used. Any difference in viscosity will change
>the
>actual flow rate. I recently used mineral spirits for testing, as it is
>safer. (Please see my other post). I was more interested in checking the
>injectors, adjusting the regulator and checking the fuel pump's well
>being.
>
>There are two flow rates that are of interest: A free flow rate, which
>is
>just the pump running full bore with no restrictions. There is a list of
>pumps on the GN site that lists them this way.
>
>The second is more meaningful: This is the rate against the head
>pressure
>of a regulator. On a TBI system, this runs at 9-13psi (I'm using 15psi).
>On a port system, this runs about 43psi (varies in practice). At this
>higher pressure, the flow will be less.
>
>Once I have an installed and sealed up fuel system, I'll be doing a test
>of the second above. I'll also check it at 12v and 18v, just to see how
>much more fuel gets pumped by boosting the volts. I'll run the pump from
>a power supply, and measure the flow from the return line out of the
>TBI.
>
>BobR.

Most injector tests are run using Stoddard (safety) Solvent.

Greg
>
>Clarence Wood wrote:
>>
>>   Thanks!  Sounds like the same type pump.  The circular number on mine
>>is 014 and
>>   it has made in Germany.
>>   If you have time, could you tell me how you flow test a FP?  Do you
>>need to use fuel,
>>   or is water or some other liquid safe to use?
>>