I have a few questions as well.

1. How much fuel pressure is needed?

2. I do not have a primer pump. anymore. Can an electric pump be used instead.

3. Are there seals in the delivery valve that needs replacing after doing drip timing?

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

judging by what you've said Tango, I'm at least in the ballpark with slightly more than a drip per sec?

I have done it with an Electric Pump on Mercedes and other Inline Fuel Injection Pumps and it is easier then using the Hand Primer.

Also one place I worked they had a gravity feed type set-up. But, when you do that you have to hook it up directly to the Fuel Injection Pump Housing; with the small one we had there would not have been enough pressure to push past the Valves in the Fuel Supply/Lift Pump.

If you have an MW IP you are supposed to replace the Copper Crush Washer. If you have an M IP you are supposed to replace the O-ring and the Copper Crush Washer.

The last time I did mine I had not ordered any new Crush Washers. Since I have other vehicles to drive I fgured I would re-use the Old Crush Washer and if it leaked I would just let the Car sit till I got a new one.
So I lucked out and it did not leakd. However, If you do not replace the Copper Crush washer you cannot count on it not leaking.

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84 300D, 82 Volvo 244Gl Diesel