Sluggish diesel car

It could be any number of things as you don't give much to go on. Does the turbo wind up? Is the CEL on?

It bumps forward when I change gear for a little boost sometimes a ticking from engine can hear it inside and a funny mechanical smell there are 2 injectors that are black, asking here for anything I can do for a temp fix as I'm pretty busy with work with no days off so I have to drive it

And no cel isn't on in had a local mechanic I know have a look he also pit a device on in the car and it come up something like no problems

If you have a boost gauge what does it show under full throttle acceleration?

When was the last time the fuel filter was changed?

I brought it about 4 months ago so thought I didn't have to have it looked at! Im now getting black dust from the exhaust coming out 2 injector seats are also black and I'm thinking it could be fuel filter too I will take some pictures soon