[Baffler]

Hello and welcome JCF,

Not wishing to be disrespectful but this has been discussed at great length across the relevant forum/s. It's a specific engine, on specific models, so I suggest you try a Google search for "VOC D5252T dynamic timing" as you will find everything, and more, that you need to know. Plenty of threads on the same here and elsewhere.

Without software the only way to time these Bosch VE pumps is with a dial gauge...some would argue the latter being the only way.