Bosch pump issues

[Matt]

My pump is gov modded and modded lda
When I start the car for the first time after it's been sat (say overnight) it's very hard to start.

It's very almost like no fuel, and I crank it to bleed it off.

•If I prime the grenade before start it's a lot better
•once it catches, it fires on 3 cylinders for approximately 5 seconds, where revving doesn't make any difference
•after 5 seconds, can rev, cloud of black/brownish coal out the exhaust
•once running, until it's warm, will under rev on idle (normally sits at 1000rpm but will sit at 800rpm)
• once running, once warm, turning off and on is no problem.




So the problems I've sourced, pump leaks. Not sure where from, there is no obvious point, it's just from the front, under the pump stop.
Leaks from the back slightly too, near the fuel banjo, but not the banjo.

Leak off pipe from pump to injector is a boost hose, made of rubber. (I have a replacement. It's very flexible, maybe being sucked flat?

Pump and injectors are off a known running car, was running before it sat for a couple of months, but it literally came off one car and straight onto mine.

Basically, I want to sort the rough start, it does it on both diesel and veg. Only does it on Bosch pump. Was fine before hand.

What I've been trying to look at is
•timing
•leak (causing it to air up, return fuel down the lines? Feels like I bleed it everytime I start
• leak off, either split, got a hole, or is just shit for the job

It must be something to do with the pump/lines/injectors and I don't know enough to find the problem