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Originally Posted by Carrameow
The test is supposed to be done with a special column of diesel to get constant head pressure.
What you can do instead (if you have a sedan, at least) is fill the fuel tank and get the back of the car up on ramps or jackstands. Then you won't have to pump by hand.
In all respect, are you sure?
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While I haven't found it in the FSM I remember reading about the "column" from Stu Ritter almost a decade ago. If I recall correctly it was like a big graduated cylinder and you might have even watched the rate of fuel drop.
In my experience with the timing procedure (using the drip tool) the transition from a fast flow to nothing at all is very fast. I think the "one drop per second" refers not to a specific flow rate but that region between continuous flow and residual drops.
I also remember reading about an alternative method where you dip paper towel into the delivery valve body and watch for the fuel to come out, but I've never tried it.
In my experience with the drip tube method, operating the hand pump and turning the crank at the same time was difficult, and it was hard to discern if the flow at the drip tube was slowing because of the crank angle or because the pressure in the pump body had fallen. Jacking the rear of the car solved this problem well.
Ted