series 3 diesel 2.25 starter problems!!

Hi,I just would like to know how much heat (in time) do I give me landy. I have has 5 series landy's but all been good old petrol. So the engine starts after about 15/20 sec heat and whinding it over a lot!!!. Read here somewere that there is a cold start facility on the pump? I have raised the idle slightly on the throttle stop on the pump (small bolt stop) do i need to take that back to were it was?. It's just when the weather starts to get cooler I know it's gonig to struggle to start. Once started it's fine.
Any thoughts or suggestions would be greatfully received. Again thanks in advance.

series 3 have heater plugs depending how they are wired up, some are wired up if 1 plug goes down they all stop working , and the other way is if 1 goes down the other three will still work, the pump on mine is lucas cav it as no heater, i would invest in a set of new heater plugs, also there is a orange light on the right hand side of the speedo clock when the key is turned to heater the light goes very bright that tells you its heated and ready to start about 15 secs.

I give my plugs about 15-20 seconds, longer in cold weather. I'll own up to having some new plugs waiting in a box tho'
You should also have the gas pedal on the floor when starting (it's an ancient design, none of this fancy electronics to sort your fuelling on start up).
probably no problem with the idle screw, but it might idle a bit high when warm (/hot if you've removed the engine fan)

2.5 diesel engines start better with out throttle and the knack is as soon as it fires give it a little throttle as revving the engine to much on startup starves the bearings of oil.

He's got the old 2.25, but i agree, you don't want to be revving the thing straight away. As soon as it catches you can be off the throttle.

Read edit for a disclaimer on this!

"Having your foot to the floor doesn't actually enable full fuel flow on start up anyway, because the CAV pump is/might be a mechanically governed jobbie and will dose fuel volume depending on engine speed (very low at start up of course), but give small excess fuel if you are demanding it at the pedal. If you have set your idle speed to be nice an low when the engine is hot, then you probably won't get enough fuel at the injectors to reliably start when off the throttle."

edit: got me thinking that i'd never actually investigated the inside of a CAV pump. It might be a lot cruder than the governed pumps and simply be a rod going between foot and spill port sleeve, which could mean full fuel on full throttle, independent of engine speed. Anybody taken apart a CAV to have a look?