White smoke from exhaust AND losing power?

Hello,
So... I have Land Rover Freelander 2.0 TD4 (2003).
Motor starts losing power and white smoke coming from the exhaust. Amber motor signal lights up. Idle power fluctuate too.
Sometimes the car stops because of loss of power but it is possible to drive onward if i give gas... After this in some cases i can start the motor again but sometimes not. Amber signal usually goes out. Motor is normal for a while. Than everything starts again. When i dont use the car for 2-3 days it is OK for longer time (100-200 km)
We blanked the EGR valve but not helped.
I read here about the crankcase breather filter maybe have to change that? Can this filter problem causes these symptomes?
Any suggestion?
THANKS!!!

It sounds like the injectors to me.

If the light came on there should be a code stored. Without getting the codes read it's all guesswork

Been a few weeks since this post but hope this helps (and you've decided to keep the FL1!).
Apologies to regular forum members for the repetition.

The white smoke is oil burning along with fuel and air. Seems to be very much linked to a saturated crankcase breather (PCV). Get it out and replace with the BMW cyclone separator. Part is cheap and a permenant fix for an often long-time neglected filter (not a service item!). It will stop smoking after a while as the residual oil gets burned off. Cleaning out all air hoses/plastics and air manifold goes a long way to stop it, too.

As @Nodge68 suggested, the fluctuating idle is likely down to failing injectors (dirty nozzles). This will be a direct result of the failed PCV and EGR letting dirty, oily air into the cylinder.

Mine suffered similar idling issue starting with a fluctuating gauge needle, lumpy idle and eventually violent rocking of the engine. So much so that the truck moved back and forth on idle. Pulling all 4 injectors, soaking the nozzles in oven cleaner and blasting the crap off with brake clean (twice!) sorted mine. Along with loads of other cleaning.

Good luck.