change diesel debit on 1.5d Lucas pump

1. Nothingface Newbie Joined: Feb 2015 Posts: 4

   #1 2nd February 2015, 18:41

   Hello
   
   I have a Citroen AX with a 1.5d engine from a saxo.
   
   I would like to up the max fuel, but as I have a lucas pump and as I know that screw is behind a plastic cap inside the pump.
   
   I have searched for guides on the internet but I have yet to find anything.
   
   Has anyone done this an taken pictures ? is there a guide somewhere ?
   
   I just would like to not go blidingly as it is at a bit of an awkward position.
   
   Thanks
2. welshpug Saxperience Forum Bum Joined: Jul 2010 South Wales Posts: 3078 ZX 16v, 205 GTI, 309 Goodwood, 405 MI16.

   #2 2nd February 2015, 18:55

   google for 306 lucas pump adjustment, its likely to be the same, however you will have much less leeway for increasing fuel as you don't have a turbo.
3. Nothingface Newbie Joined: Feb 2015 Posts: 4

   #3 2nd February 2015, 19:13

   There is this video on youtube.
   
   Someone that has done it can comfirm that the procedure is the same ?
   
   After I'm done adgusting the screw to reprime the pum I just need to squese the hand pum on the engine bay until it gets hard, and I should be fine right ?
4. Nothingface Newbie Joined: Feb 2015 Posts: 4

   #4 2nd February 2015, 19:14

   This is the video, I don't see any edit button on the forum
   
   https://www.youtube.com/watch?v=mbkN3PaGRQU
5. chinkostu Saxperience Post Whore Joined: Aug 2008 The wrong carpark Posts: 5152 Xantia 1.9TD

   #5 2nd February 2015, 20:18

   Quote:

   Originally Posted by Nothingface This is the video, I don't see any edit button on the forum https://www.youtube.com/watch?v=mbkN3PaGRQU

   Is it really worth upping the fuelling on a NA diesel? You'll get a smidge more poke but the only reason we do it on turbos is so we can add more fuel in with the extra air when we crank up the wastegate. Even then, the max fuel doesn't make too much difference on boost
6. Nothingface Newbie Joined: Feb 2015 Posts: 4

   #6 2nd February 2015, 21:44

   A friend of mine has a 106 1.5d and it made quite a bit of difference.
   
   But his is a Bosch pump qich is quite simpler
7. MartinObviously Saxperience Forum Bum Joined: Dec 2012 Perth Posts: 3665 Peugeot 106 1.1 Turbo Peugeot 106 1.5D Turbo Peuge

   #7 3rd February 2015, 17:52

   Yes that's the correct video, the max fuel is behind that screw.
   
   I haven't watched the video, but NO more than 1/4 of a turn on a Lucas. else your idle will increase. and that complicates things. Also, it'll add too much fuel which will make it slower.
   
   It's easy tuning with the 1.5d bosch, because you can turn the max fuel screw up at idle until it goes from 850-1000 and that's just about right.
   
   It doesn't make a hell of a difference, it's a waste of time really. we're talking about 5hp of difference. You'd probably see more benefit fitting a straight through exhaust.
8. welshpug Saxperience Forum Bum Joined: Jul 2010 South Wales Posts: 3078 ZX 16v, 205 GTI, 309 Goodwood, 405 MI16.

   #8 3rd February 2015, 18:59

   it already is a straight through nearly, there's no centre silencer on the diesels
9. MartinObviously Saxperience Forum Bum Joined: Dec 2012 Perth Posts: 3665 Peugeot 106 1.1 Turbo Peugeot 106 1.5D Turbo Peuge

   #9 5th February 2015, 12:06

   Quote:

   Originally Posted by welshpug it already is a straight through nearly, there's no centre silencer on the diesels

   Oh yes there is
   
   Later models like mine came with a cat too!
   
   So, naturally, I ripped it out