T4 Diesel help

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Whitevanman
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T4 Diesel help

Post by Whitevanman »

My father in law's 2.5D T4 has lost power, noticeable at speed, it doesn't go up hills anymore. He's been told it's either the turbo, injectors or injector pump amounting to £2k of parts. Does anyone know a good specialist in the Midlands who can help diagnose the problem.

Thanks

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Whitevanman
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Re: T4 Diesel help

Post by Whitevanman »

Check for a boost pipe leak or pipe popped off

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Thanks, he's changed the boost pipes, MAF and MAP apparently but no improvement. No fault codes come up. Loss of power, changing down for hills all the time, 10 to 15% reduction in fuel economy.

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silverbullet
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Re: T4 Diesel help

Post by silverbullet »

https://www.vwt4forum.co.uk/" onclick="window.open(this.href);return false;

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davidoft1
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Re: T4 Diesel help

Post by davidoft1 »

Check the fuel pump belts not worn, quite often people don’t replace them when they do the cam belt

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