I have a saxo diesel that has a cold starting issue. When starting the engine you have to hold the accelerator down after about 15 seconds it will judder as if going to start and it takes about 30 seconds to eventually start. It then misfires and sometimes acts like it might cut out and it has sometimes. When it starts while holding the accelerator down I get a cloud of blue smoke. Once warm the engine will start no problem and there is no smoke at all. I know blue smoker is burning oil but why is it struggling to start, Can anyone help me.
Oh forgot to mention I have given it a full service (new oil, oil filter, fuel filter, air filter and glow plugs), it has a new alternator and a new battery. I have also used redex injector cleaner.