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300Tdi ROW fuel line fittings


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Td5 fuel fittings are M14, 300Tdi are 1/2 20 UNF. What's the likelihood that the 2002+ 300Tdi fuel lines are M14?

I've ordered the lines, but they're stuck in the warehouse at work and I need to get Friday's post if I want any adapters/nuts for the weekend!

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Surprisingly (or not), they turned out to be 1/2 20 UNF

I have a Td5 plastic tank and one of the pipes had been leaking since last year. I suspected an O-ring and replaced that last August. A 3000 mile round trip to Morocco made a disgusting mess and proved it wasn't fixed. I've also been having problems starting when facing up a steep hill (aka my driveway). Not wanting to have to drop the tank every couple of months chasing a leak, I bit the bullet and bought set of genuine pipes, which will plug straight into the tank connectors.

There's a long set of pipes and a short pipe to complete the circuit. The long set were £100 (WJP107980), the short one (WJP107970) is £220! So instead I ordered the filter to tank pipes from a Tdci, which has 2 pipes and was only £40 (LR016984). These though have a quick connector at both ends, so I got a compression fitting to fit a quick connect brass tube onto a 1/2 20 UNF adaptor for the sedimenter.

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I used a hosetail from a Td5 fuel filter housing. After seeing the amount of Moroccan dust that found its way into fuel pipes, fitting a sedimenter didn't seem like a bad idea. I know some people don't like them.

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  • 1 month later...

To clarify for a question i've been asked, the cheap and easy way to plumb in the ROW fuel pickup is to get some Td5 fuel pipes, cut off 2 of the fuel filter connectors, and attach them to the existing plastic fuel pipes. In my case I wanted a sedimenter, so the extra work with fittings, etc. above was due to this.

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Nice wee post. There's a fair bit to be said for sedimentors, like you said not everyone cup of tea, but I've only ever had good experiences with them fitted, vastly reducing fuel contamination at the fuel filter end of things.

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Nice wee post. There's a fair bit to be said for sedimentors, like you said not everyone cup of tea, but I've only ever had good experiences with them fitted, vastly reducing fuel contamination at the fuel filter end of things.

Ditto, the amount of carp that precipitates out in the sedimeter and doesn't go through to the filter is amazing.

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