Focus Diesel Problems-Car Lagging

[James1981]

Hi just looking for some advice or if anybody else has had this problem.

I have a 58 plate Ford Focus Style 1.8tdci and am having some power problems when the fuel tank is at a certain level.

When I fill the tank the car runs smoothly for the first 100 miles then problems start occurring. When accelerating at around 2000-2500revs the car suddenly looses power and judders, it doesn't cut out but if I take my foot of the accelerator it will ease off and I can then accelerate a bit more then the same problems.

When the fuel then reaches 1/4 of a tank the problem stops and it runs fine again.

Appologies for going on a bit first time on here and slightly baffled with the whole thing.

[IINexusII]

do you know when the fuel filter has last been changed? if you dont know i would advise changing that first and see if it improves

[James1981]

Hi thanks for reply. it was last replaced about 10,000 miles ago had a full service done air filter, fuel filter etc.

[MONDEO TXS 2.2]

Change the fuel filter anyway & run several tankfuls of good quality injector cleaner through the system as a cheap-ish next step & see if there's any improvement

Is the EGRV blanked ?

[James1981]

Will do that see how it runs then (project for the weekend).

EGR valve is not blanked off, have read about this is it worth doing?

[IINexusII]

yes definately do that too, most bank for your buck upgrade you can do