Hi can anyone help
I've a miss fire and overfueling on start up , disconnect maf sensor and it stops, reconnect starts again
Replaced injectors, egr valve, inlet manifold , maf sensor, water temp sensor, glow plugs
List goes on
At wits end

More information it's a 2008 scudo 120 multijet with 90000 miles on it. After about 60 seconds of misfire and smoking (White that stings the eyes, Iburnt diesel)
It runs absolutely fine good mpg and performance.
Don't know if this is common problem or it's going to be a life gremlin of the vehicle
Any help would be great.