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Just a warning for anyone with a 1.2TSI 90PS or 110PS built before maybe 2016 as there is a danger that the fuel delivery pipe up to the HP fuel pump is rubbing against the AC discharge pipe, which long term is not desirable!

My wife's late August 2015 reg'd Polo 1.2TSI 110PS was built to order so would have had a build date of early July 2015 in South Africa, but after finding that the pipe that is rubbing against the AC pipe is the fuel pipe that gets fed from a "fuel delivery unit" mounted on the tank, so will be "low" pressure petrol, I checked its part number only to discover that that version of pipe was changed from engine build 18/11/14 onwards, so maybe these engines were being built well ahead of when they were fitted into new cars - this would tie in with the warning we were given when ordering that car in April 2015, ie the orders for 1.2TSI 110PS engined cars would either be closed by the time that car was scheduled to enter build or it would just make it, all further orders would only be accepted as having the new 1.0TSI engines. This sounded like the engine build plant was being cleared of the old engine types in preparation of building the new 1.0TSI engines.

Anyway, it is easy to work out if your car might have this issue now or in the future, check to see if there is a "bridging clamp" across the small coolant return pipe coming back to the top of the coolant reservoir and the pipe beside it which is the fuel delivery pipe to the HP fuel pump. If the pipes are touching, I'd expect that there will be a polished area on the AC discharge pipe - the larger diameter alloy pipe.

Time to start talking to my supplying VW dealer.

Thanks for the heads-up. I'll be checking mine.

d-ash wrote: Fri May 04, 2018 8:33 am Thanks for the heads-up. I'll be checking mine.

d-ash, given that your car is a 2016 I'd hope that it will have the newer version of low pressure line fitted to it which seems to be when the "bridged clip" was added, it looks like most if not all clips that are fitted to pipes on newer cars never exist by themselves, which means you can't buy a clip without buying the newer low pressure fuel line and then taking the clip off it to fit to a car without it!

Anyway, I've now been down to my local VW dealer and collected the clip that I got them to order in as it looked as close to what I wanted without getting VW to agree to replace this pipe under warranty, the part number of the clip that I ordered was N10732301 and it cost £3.83 inc VAT - which to me sounded like a better plan than visiting VW dealer, chatting about it > returning for a booked session in the workshop > probably send away either with "no action required" or requested to rebook the car in some time later when they had the new fuel line to fit > return for another booked session in the workshop and kick my heels for the couple of hours or more it took them to replace that pipe as it seems that that workshop gets very busy with unplanned work!

Now, while one end of that clip/bracket is the correct diameter to fit the small coolant return pipe, the other end is nominally 18.5mm and the low pressure fuel pipe is roughly 15.6mm, so I used self adhesive black fabric cable tape (as used over cable loops in cars) to build that pipe up enough to be gripped in the other end of that clip/bracket - and it looks a lot better than my temporary measure which was a large wide cable tie and a small narrow cable tie!

Edit:- for information, the earlier fuel line was p/n 04E 133 723 AJ, the later fuel line with the bridging clip is p/n 04E 133 723 CN, this number can be found printed onto the preformed rubber pipe section.