Leaking Fuel Filter Quick Clip (exit side)

[pikeman2210]

Hello All, my T6 (2018) is leaking Diesel on the exit side of the fuel filter. The Quick fit connector is a little loose. How this has happened I do not know since it is a non-moving part. Unless being plastic it has aged (fuel filter was last changed 2 years ago. The vehicle has only done 50,000 miles and the clips have only been removed 3 times to replace the fuel filter.
I have measured the fuel filter inlet and outlet spouts (9.95 and 8.03mm respectively, using a micromoter) Does anyone know the part numbers of these two clips?
I have found non VW Universal clips on ebay for about £10 each Pardon our interruption... States 7.89 mm which I presume is the inside Diameter (the next size, for the inlet is 9.89mm) and thus is within error to fit the exit side (thus assume a very snug fit)
Are these the parts suitable?
Anyone else had a similar experience and how did they solve it?
Regards
Stephen

 

[DXX]

According to LLL Parts VW diagram the hose and coupling are sold as one.
These connectors can be problematic but I can’t find any reference for a part number or size, definitely work having a spare or two at home.

 

[pikeman2210]

Hello, I don't suppose you are able to post a link? The hoses that they connect to are short.

 

[DXX]

Google LLL Parts

 

[pikeman2210]

Hello All, an update, I replaced the Quick clip connector but it turned out not to be the problem. The leak had got worse. Having fitted the new clip and turning the engine on I noticed a fine spout of fuel coming from what seemed below the fuel filter. Thinking the worst (that it was a leak in the pipework below the filter) I took the filter out from its holder and re-connected it so I could see more below. When I started the engine it was plain to see that the leak was coming from the top of the filter, from the top weld of the cannister filter). So I was quite relieved that it was going to be a simple fix. Filter was only fitted 11 months ago. Non-branded one but marked QFF0305. I contacted the retailer asking to assist in reporting the failure to the manufacturer but they have so far ignored my request.
Since the service is due in May I ordered a service kit including a new fuel filter.
Anyone else had a similar issue.
I replaced the orignal Quick Clip connector awaiting the new fuel filter, so the new Quick clip connector is a spare.
Stephen

 

[DXX]

Never try and save £ by purchasing non branded filters and only buy filters / elements from reputable dealers, too many counterfeit items around.
Good you found it without it hitting a hot exhaust system.

 

[pikeman2210]

Never try and save £ by purchasing non branded filters and only buy filters / elements from reputable dealers, too many counterfeit items around.
Good you found it without it hitting a hot exhaust system.

I beg to differ. I once couldn't get the code from Renault for a fuel filter for my Dacia so had to buy theirs (£30) When I got it it said made in China. I'm betting most are made by the same manufacturer. I was then able to buy a much cheaper one for £11. Not had any problems with them. Or the previous one for the T6. Unfortunately the seller seems to want to ignore my request to inform the manufacturer of this failure. Thanks for your input. Regards Stephen

 

[Paynewright]

Never try and save £ by purchasing non branded filters and only buy filters / elements from reputable dealers, too many counterfeit items around.
Good you found it without it hitting a hot exhaust system.

I agree!!

Thats not to say do your research / due diligence. I once bought a Sachs suspension part for the Porsche that had the Porsche part number ground off it. It was a quarter of the price of the dealers!

 

[pikeman2210]

I agree!!

Thats not to say do your research / due diligence. I once bought a Sachs suspension part for the Porsche that had the Porsche part number ground off it. It was a quarter of the price of the dealers!

If parts are generally made by the same manufacturer,, what I object to is Car manufacturers adding significantly more than a small cut on to the parts. I would buy branded parts but only if they are not made in China and if they are, there isn't a huge mark up on them. I would happily pay 3 x the price if the item is made in Europe or the USA. I despise buying Chinese goods but sometimes it is impossible not to. I'll get off my soap box now lol. Had same issues trying not to buy a non Chinese made small lawnmower. My research showed that any engine of 150cc or less is made in China. Otherbits may be made eleswhere. Was even willing to spend £700 on a Qualcast only to find the engine was Chinese made. Even G-tec is Chinese made. So got a cheap battery Chinese one. I digress. Regards Stephen

 

[DXX]

I beg to differ. I once couldn't get the code from Renault for a fuel filter for my Dacia so had to buy theirs (£30) When I got it it said made in China. I'm betting most are made by the same manufacturer. I was then able to buy a much cheaper one for £11. Not had any problems with them. Or the previous one for the T6. Unfortunately the seller seems to want to ignore my request to inform the manufacturer of this failure. Thanks for your input. Regards Stephen

The difference is quality control. Having seen multiple marine engine room fires due to burst filter canisters, cracked HP injection pipes, all of which were ‘aftermarket money savers’ I’ll have to disagree.

 

[pikeman2210]

The difference is quality control. Having seen multiple marine engine room fires due to burst filter canisters, cracked HP injection pipes, all of which were ‘aftermarket money savers’ I’ll have to disagree.

Hello, I could debate this subject for quite a while. That said you obviously have plenty of experience of such and I can tell, the knowledge to go with it. I, rightly or wrongly assume they are made by the same few manufacturers whom also make branded ones. I'm guessing the way they get tested is pressure testing coupled with a visual. Might use some sort of ultrasound or x-ray but doubt it. I doubt they alter the welding for the cheaper ones and cost is based on order numbers and a quality control regime. The manufacturers will know a predicted failute / lifespan rate. It will be highly likely that the odd duff one will get through based on calculated risk /known failure rate. Maybe I got the one? It is feasible that the undranded used thinner material. I've not researched it enough to know. Obviously the weak point is the welded tops. For now I'm going with the unbranded unless it happens again then it will be too much of a coincidence and I'll go with something like Bosch. If you are an engineer of sorts [I'm a Chemist with a fair part (ca 20%) of that being materials Science] then next time you are changing your fuel filter you could saw it in half and measure the canister wall thickness and I will do same and report back here? Be interesting to see the inside of a used one. Nice debating with you. Regards Stephen