Juddering 2.0 TDI

[P Crr]

My car was fine till the other day when I filled up at local supermarket. Now car judders under heavy accelaration at around 2500 rpm and above. Car starts fine. No lights on. Car is a 55 plate with 83K.

 

[Six-speed]

Funny old thing. I refuelled at Sainsbury's last time I filled up and it ran rough and juddered. Next refill I stuck in some inector cleaner and went for a 'branded' fuel. Much better, could've been a bad batch I suppose, although around now I understand that the frost-protection of the diesel is changed by the manufacturers for winter driving. Perhaps that was it.

Hope that this helps.

 

[Six-speed]

Now emptied a tank of real deisel. Engine much better, must keep away from that Sainsbury's chip fat!!!

 

[TripleD]

Nice useful post! My A3 2.0 TDi is hesitant from 2.5k up to 4k, filled it up with £55 of Tesco's Value diesel the other day, so I guess that's the cause! Was thinking something was on the way out! What cleaner did you use?

 

[Six-speed]

Redex diesel cleaner, bottle is apparently enough to do two full tanks, but I just whacked the whole lot in!

Probably worth paying the extra 2p a litre for Shell or whatever.

Cheers

 

[Six-speed]

Redex diesel injector cleaner. Just stuck a whole bottle in.

 

[M7R]

I use sainsburys or mainly asda in my tdi, and it seems fine on it, you might have just had a dodgy batch. but i will say that every 10k or so (every 4 months lol) I run some miller +4 through it as thats stuff seems pretty good and aload of the lads on cgti swear by it

 

[Good 2 B A Gooner]

I use sainsburys or mainly asda in my tdi, and it seems fine on it, you might have just had a dodgy batch. but i will say that every 10k or so (every 4 months lol) I run some miller +4 through it as thats stuff seems pretty good and aload of the lads on cgti swear by it

Sorry to butt in guy's What is miller +4?!

 

[M7R]

Sorry to butt in guy's What is miller +4?!

its a fuel system cleaner and booster

http://www.halfords.com/webapp/wcs/..._productId_370465_langId_-1_categoryId_165750

 

[captaintricks]

did the problem get fixed ? I had a similar problem on my a3 and it got progrssively worse and the fix was an injector part (after going round the houses and being told different stuff by different mechanics)

 

[P Crr]

Bottle of millers additive done the trick straight away. Ran tank down with no problems after adding. Next fill I used Shell V Power. Still no juddering.

 

[TripleD]

filled up with diesel from Asda and it was fine for a couple of tank fulls, then had to fill up at a sainsburys, it's juddering like mad again!! Somethings gotta be wrong, i.e. MAF or something. Just put £45 of Shell V power Diesel, will see what she's like on the trip home.
Failing that it's booked to visit Audi tomorrow!