No, not a chance. I rebuild them with the pump held vertically in a jig like this:romie wrote: I'm wondering if the springs could be replaced with pump in situ? Don't think so as the pump needs to be held with distributor end upright to stop all the plunger mechanism from dropping out.. hmm, am sure someone's going to achieve it at some point - never say something can't be done eh
Trying to do it horizontally within the confines of the engine bay will be a challenge of the highest order...
It's tricky enough in a jig!!!!