Juddering when driving?

[meatball]

Morning all, little problem I'm encountering now and then, I can be driving along, just go to put my foot down and all of a sudden the car starts juddering, and almost at first felt like turbo lag at first, but just getting a bit more like a judder now.
After 1 or 2 seconds or letting off the gas and trying again its fine, it has been running on veggie fine, but last few weeks been back on diesel, new fuel filter fitted, this is happening.
I also think the cps sensor is on its way out, could this be something to do with it also?
Thanks in advance for your replys,
Craig:thumb2

 

[zippy656]

Id go for some injector cleaner£15 orso

 

[supergnome]

Check fuel filter primer for air and pump it out. Some filters dont fit well and pull in air. David.

 

[rustic]

Check fuel filter primer for air and pump it out. Some filters dont fit well and pull in air. David.

You usually get clouds of white smoke, if the fuel filter doesn't fit right and lets in air.

 

[terranobreakershropshire]

throttle pedal nackered i rekon.

 

[Banshee]

I'd go with air in the fuel lines, prime the Fuel Filter with the plunger on top until it goes solid, failing that, open the drainage cap and prime it then making sure it's just pure fuel coming out and not air

 

[96terrano]

I'd go with air in the fuel lines, prime the Fuel Filter with the plunger on top until it goes solid, failing that, open the drainage cap and prime it then making sure it's just pure fuel coming out and not air

id find out why there's air in the lines 1st if that is the problem