Dieseldude need your expert advice about my subic pajero 4m40.

1. Ang lakas sa oil almost 1 liter every week. Wala naman leak.
2. Hard starting sa morning and everytime na i park siya, kailangan i pump yung fuel para mag start. Sometimes maraming beses pa rin na try bago mag start, kahit pump mo pa yung diesel.
3. Laging namamtayan ng makina kahit nasa rekta, then pump muna ulit bago mag start.
4. Eratic Idling
5. Nung last cleaning ng fuel lines and fuel tank pansin namin na madumi parang may halong langis yung tank.
6.As of my last reading 4.9 km/liter fuel consumption ko.

I'm from Tacloban City leyte if ever pwede ko ba padala jan yung injector kung kailangan ng i calibrate then ship niyo nalang ulit pag nagawa na? How much po charge niyo estimate para maayos ko yung budget? Ilang days po matapos?
TIA