XUD lacks grunt

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Black
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XUD lacks grunt

Post by Black »

Hi all,

Newbie to the forum - hoping someone can point me in the right direction..

I have recently purchased an mot failure pug 405 turbo diesel - 1997 vintage with 140k on the clock.

After some welding, ball joints and a few other bits and pieces I have got it through the mot and have been using it quite a lot.

Overall impressions are that its a great car - really useful for the family, steering is nice and brakes are good.

My question is about the xud engine - it performs well, pulls like a train in fact, but the performance comes at 1,000 rpm higher than I would expect. So the turbo doesn't kick in until 2,750 rpm and it doesn't really pull hard until 3,250 rpm and it's still pulling hard at 4,250 rpm..

From looking all over the Internet, I have read lots of stuff on the xud ranging from you have to keep them on the boil to make progress to the egr needs blanking off etc etc.

Does anyone have first hand experience of this?

Many thanks
Peter.N.
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Re: XUD lacks grunt

Post by Peter.N. »

If its the 1.8 engine they are like that, very un diesel like. If its got a Bosch pump check the thin rubber pipe that goes from the pump the the intercooler.

Peter
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Re: XUD lacks grunt

Post by Black »

Thanks for the reply Peter - it's the 1905cc as far as I am aware.. Re the pump how can I tell if it's a Bosch pump? Thanks, will
Peter.N.
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Re: XUD lacks grunt

Post by Peter.N. »

If you have a look on the top there will be a vacuum module with a thin rubber pipe connected to it.

Peter
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Re: XUD lacks grunt

Post by Black »

It's a Lucas pump Peter - anything to check with that type? Thanks
Black
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Re: XUD lacks grunt

Post by Black »

Sorted it - just by fluke I was looking at the fuel pump and moved the accelerator cable slightly. I noticed immediately how slack it was. I adjusted it so it's as tight as possible without raising the idle revs. Well that little adjustment has transformed the car, I think I must have been getting about half throttle movement previously. Now it goes really well and picks up much earlier in the rev range. It's like someone has put a new engine in the car :) Thanks, will
Peter.N.
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Re: XUD lacks grunt

Post by Peter.N. »

Well done. =D>
jgra1
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Re: XUD lacks grunt

Post by jgra1 »

Good work ! A nice easy fix :)
John
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Re: XUD lacks grunt

Post by Black »

Many thanks - really good forum and I am sure I will need more advice... Doing cambelt on Wednesday...
Cheers, will
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Pug_XUD_KeenAmateur
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Re: XUD lacks grunt

Post by Pug_XUD_KeenAmateur »

any tips on the cam belt job do feel free to post, especially re tensioner and suitable size bolts for locking the pulleys in place. Not looking forward to doing my normally aspirated 1.9D 405 next year
Puxa