Ford Focus LS - Smoke on acceleration

[Steezy]

Hey guys,
I’ve had a search and come up blank in here so I though someone might know what’s up if I posted.
So my car has this odd issue where it will blow smoke and rattle under acceleration. It seems to only happen when the car goes from no load, to 50-100% load. Almost as if it’s just before the auto fully engages. It’s more prone to happen on hills as well.
So far I’ve tried changing/ cleaning the EGR valve and the swirl plate solenoid (bear in mind I’ve changed with car yard parts, so every chance they could still be faulty).
The EGR valve previously has a gasket issue, where a small bit of coolant had leaked into the valve and EGR ports in the block. Wether or not this could still be contributing to the issue is beyond me, but can anyone also advise the best way to clean the ports in the block out ?

Other potentially related issues:
• it’s done 205k kms
• It’s a bit rough at idle, almost like a broken engine mount.
• it chews through fuel, it’s doing 11.5L/100km in moderate city driving.
• burns oil, is close to black within a month of changing

If looked into the Duratec 2.0’s and most people seem to indicate it’s the EGR. But I’m hesitant to replace the whole EGR system if there’s other potential problems it could be.
Any help is appreciated !