2.0Tdi CFFB Injectors?

[iamcboy82]

Hi all,

Ive got the A3 2.0Tdi 140 s-line with the CFFB engine code, when initially driving in 1st 2nd 3rd it judders at around 1800rpm but if i put my foot down over 2000rpm the juddering goes and its fine when the engine has warmed up, do you think it might needs the injectors cleaning, i believe mine has the common rail system.

can the injectors be removed quite easily? and cleaned the ultrasonic way? or is this a mechanic job?

any help/advice would be appreciated

 

[Sayam]

Have you tried some decent injector cleaner and a good blast on the motorway?

If you use supermarket diesel that could be causing problems too.

 

[iamcboy82]

i bought some redex, but ive bought the three pack of forte injection/turbo/dpf cleaner, i'll try that before i remove the injectors

 

[Sayam]

i bought some redex, but ive bought the three pack of forte injection/turbo/dpf cleaner, i'll try that before i remove the injectors

Forte diesel system cleaner (yellow label) is good stuff but I'm sure there will be better out there.

I don't know if it's safe or not but I also run it more concentrated (fuel to product) than the bottle says and never had any issues.

 

[iamcboy82]

yeah i emptied that redex one in whole even though it said enough for 2 tanks, i'll do the same with the forte stuff, i couldnt see anything *better* on the net, any ideas?

 

[vw754]

id say its not the injectors....try fuel pump/s.......seems as your not getting enough fuel pressure until you put ya foot down..........id check coolant sensor first though...check readings with vcds

 

[iamcboy82]

ive got official vcds and no errors, weird, it was ok this morning, maybe a 300 mile trip sorted it out, i'll try liqui molly through the injectors on the weekend, then move onto the pump

 

[crf150]

Liqui moly diesel purge is good stuff, I done it on my A3, I ran the car purely on the stuff and it was surprising how much of a difference it made, once it had used the first bottle(I used 2 500ml) i used the second and the fluid started turning black, cleaning up the injectors, took it for a spin up the road and noticed a difference in response and no lag between gears

 

[millsy4002]

i had a bad judder a while back similar, turned out fuel filter was crudded up, cheap fix and worth doing anyway, i was gonna rip my injectors out but thought id try that first and worked a treat

 

[iamcboy82]

its just had a service so fuel filter will be new, going to put molly through it today if my hose turns up

 

[iamcboy82]

would it hurt to put all of these in my tank at once?, none of my kit turned up to directly flush the injectors, the car has about 1/4 of fuel in the tank

 

[Sayam]

If it were my car I wouldn't put those in together

 

[iamcboy82]

well just to let you all know i ended up putting the molly in the fuel filter direct after sucking out the diesel in there, and i put in the dpf cleaner and turbo filter in there, car seem to be alot better, i ran it for around 30mins on my drive before taking it out for a spin, 150miles later feels like a newer car, bit more responsive for sure and a bit more poke i recon.