I had something like this with my student 2CV back in 2003 in Dundee. Half-filled the tank one night at Tesco before heading to Birmingham where I was due to show to a potential buyer the next day. Somewhere south of Glasgow the car started running intermittently on one cylinder or the other for miles with a very rough power delivery, fuel consumption through the roof, strong dieselly smell etc - had to drive for miles on full throttle to keep one cylinder running until I got close to a service station (instead of being stuck miles from anywhere in the dark with no mobile reception!). I managed to refill at Tebay services with premium detergent-laden petrol and within minutes it ran like a dream for the last 180 miles to my destination and eventual sale. A few days after my return the local Scottish papers were full of stories about unbranded tankers supplying diesel-contaminated fuel to supermarkets in Dundee in that window that caused no end of AA call outs for rather more modern cars that ended up with expensive repairs to fouled fuel systems and the like. Junk in the petrol pumps does happen!It could be something in the fuel that just had just filled up with, we had a similar issue and when the fuel filter removed a huge amount of black goo came out. Tank flushed and new filter and it was perfect again!.
@depronmanHi Guys, I just love how all this information is available to search. This sounds like my exact situation. I have the fuel filter ready to replace. However Im concerned the fuel filter housing bolt may throw me a curved ball. How can I get hold of the said aftermarket screw just incase, depronman?
Hi guys, food for thought or maybe clutching at straws but what about fuel starvation????........the only reason I ask this now is that the lads father in law knows a bit about diesel vans and such and when he drove it tonight he said it seems like its being starved of fuel.......could it be something as simle as the fuel filter?
Thanks to the forum and the contributions from you folks I have resolved my fuel starvation problem. 2005 A2 1.4 TDI 132K. Between 2250- 2750 I have a "flat spot" in all gears whilst accelerating but managed to drive through it however it was progressively getting worse. Acquired the correct tooling and set about it. I also followed advice and purchased a custom made drain plug from @depronman . I was fortunate that the plastic drain screw didnt snap off. With the screw out bearly a drip of black fuel came out! With the 27mm socket i gingerly applied pressure and slowly released the the plastic housing. As advise about 300mm of fuel drained out. Revealed was a very dirty black filter, possibly never been changed from new. Reassembled with the replacement aluminium drain screw and left to stand for 30 minutes. Started up, this wasn't long enough is it cut out on me, left it another 15 minutes and cranked it over for a while and bingo running sweet. Happy to report this solved the fuel starvation/flat spot issue for me.
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