Hello and help :)

[organiser]

Hi everyone
just got my first Largo a 2.0 Diesel auto P reg
and I am having a problem starting it
It takes forever (it seems) to start cranking on the key then suddenly it gets quicker and quicker then fires up. It will idle ok after a few revs on the power but does stall occasionally at the lights.
I am aware it's in need of a good service (been sat up for 8 months) but clearly that wont fix it alone.
Any Ideas People thanks in advance.

[organiser]

I have had the Battery tested and its in good nick but he did say its the one for the earlier model and should be rated at 540 starting not 450 which is all foreign to me but could that be the issue ?