Reply to Arborigine:
I have followed the procedure in the Perkins manual, and just haven't managed to get two injectors to bleed without running out of battery first. I'm hoping that once that is solved it will fire off. The system is a lot sillier than Cat's.
Careful,Cat own Perkins,I do not think that pressureizing the fuel system would be advisable,the CAV rotary pump is fuel lubricated meaning that the body of the pump is full of fuel and depends on a seal on the input shaft to keep it out of the engine,pressureize it and you may blow the seal out,start by making sure there is a unrestricted flow of fuel leaving the tank,take the top off the feed pump and clean the gauze and pump body,fit new filter/s,open all the bleed screws,one on each filter and two on the injector pump,get the engine turned till you have the feel the feed pump lever has pressure,prime till the first filter is air free then close the bleeder,do the second,bottom one on the pump and finish on the top one,keep on priming till the lever goes limp,loosen each injector pipe a couple of turns,with the stop in the run position and the throttle on full spin the engine over on the starter till there is fuel spurting from each union,tighten the pipes and try a start,watch the exhaust to see if its injecting fuel,if not it is possible that the metering valve is stuck in the stop position,this can happen if the engine is stopped and the stop been left pulled out,it is best to stop the engine and push the stop back and put the throttle on full when parking for a long peroid,thoes pumps are a SOB to bleed,you need a fully charged battery,good luck.
AJ