No start 880 implomatic 4cyl

hi guys, just after a little advice my 880 implomatic 4cyl wont start it cut out so i
put new filters on bled it through and not great pressure atb the injectors, also if i need to change the injector pump does it need timimg up

cheers folks

is there a good flow from the lift pump? A clogged pump and worn rod (behind the pump from the engine block) was the cause of bad supply on my 1212

Cheers pal. I’ll look this week and get back with the results