Xantia of Desires - Farewell xantia!

[Supernaut]

Nope, max fuel screw.

 

My pump wasn't internally modded though, I'd just turned the LDA screw round and fiddled with the max fuel. I had a boost gauge fitted so I knew what it was up to as well. When I turned it down for the MOT I got literally zero boost but it still ran, I think if you really tried it would just kiss the revs needed for them to test it.

[beko1987]

I bought the screw that sits under the cap up by 2 turns and no difference. Not touching it anymore, it needs to grt me to work for the remainder of its valid ticket!

[hairnet]

sell for bits buy c15

[Arthur Foxhake]

Just seen this. I'll happily have a go at it, shame I didn't spot this earlier as no work today meant I was fannying about making brackets to mount my roof crate on the Pajero.

If we can't sort that pump, (I'd be surprised if we can't) I have a spare in the shed that can be fitted.

[Arthur Foxhake]

Also, i have no P.M from you Beko. There is another dude who signed up and nicked my username, you may have PMed him?

[Lacquer Peel]

Thing is restaurants and takeaways have cottoned on to the fact that the wvo is worth a bob or 2

When I opened my takeaway 2003 I had to pay someone to dispose of around 100 litres a week,by the time I sold up 5 yrs later I was selling it at 25ppl for filtered but not dried oil

Hell I was even chucking it into the delivery cars when the weather was warm enough........

 

I picked up a very good supply of clean, free oil from a hotel recently but it's 100 miles away. They have space to store >200l for me luckily. My mortal enemies 'Olleco' couldn't get their 7.5t lorry down the narrow track to the hotel so I swooped in, bloody Olleco have nearly every catering establishment near here sewn up.

 

Good luck with the claggy Xantia beko.

[beko1987]

Also, i have no P.M from you Beko. There is another dude who signed up and nicked my username, you may have PMed him?

He probably does have a pm! Message me to get the convo going, but Saturday am OK? I'd be more than happy with a stock tuned and fettled setup, you can have all the modified stuff off mine in exchange if you like!

[scaryoldcortina]

are you all 100% sure that the smoke is caused by the pump and not a dribbling injector?

[Arthur Foxhake]

Not yet, I have spares of those here as well if it is.

[Arthur Foxhake]

He does mention rough idling a page or three back now you say.

[Dick Cheeseburger]

Gutted to hear that it didn't play ball on the smoke test fella. Great that F'foxache sounds like a legend though. I'm sure it'll be sorted without major spend if everything else seems ok.

[beko1987]

The idles ok when the fuel is up enough.

 

But it now needs Arthur's experience I think, I'm out of my depth now! Hopefully a day of fettleage can see it right and I'll learn a butt ton in the process!

[beko1987]

I'm suddenly alot happier about the whole situation

[beko1987]

something else I thought if, could I have got the pump timing wrong? So at the silly higg revs it cant help but chuck shit out?

 

coukd this also be why I have louder than normal diesel clatter? Ive been putting that down to me hitting a valve or summat when I tried to turn it over with the slipped cambelt, but kept quiet about that for now because I felt like an idiot... But Ive just had a thought about the pump, and realised it may be related

[SiC]

are you all 100% sure that the smoke is caused by the pump and not a dribbling injector?

Would that not be creating some impressive clouds of smoke during cold & warm startup?

[twosmoke300]

I was thinking the pump timing may be out

[scaryoldcortina]

Most times if the pump timing is out it makes it a total arse to start. Knackered injectors can cause alarming knocking noises though...

[beko1987]

Nah it starts on half a turn of the key in all weather so far.

 

Ill make a note about the injectors then. I would film it but it sounds worse on my phone as it picks up every little sound and magnifies it

[themildbunch]

Nope, max fuel screw.

 

My pump wasn't internally modded though, I'd just turned the LDA screw round and fiddled with the max fuel. I had a boost gauge fitted so I knew what it was up to as well. When I turned it down for the MOT I got literally zero boost but it still ran, I think if you really tried it would just kiss the revs needed for them to test it.

 

Yep - worth reducing the mac fuel screw or the 'smoke' screw... It's on the right hand side of the pump and might still have a metal collar on it... 

It had a 10 or 13mm lock nut and once loose use a long thin screwdriver to screw it out a bit... Really easy to do and you can't break it... if you turn it in the idle will rise and it'll get faster off boost and probably even more smokey..

 

I constantly fiddle with my BX's pump trying for the sweet spot of power / economy... every MOT recently it fails on the first try and the passes on the next smoke test - 

[Eddie Honda]

Bit of a pisser failing a second check, see it as an opportunity to try a new MOT tester who might do the required tweaking after the test to get it through either gratis or for a modest fee.

[dieselassist]

didn't chompeysnake have this xantia for awhile n did a bit of diesel tuning on it to get mooar power?? might be worth looking up his old threads on the car, if they haven't been deleted, since he left or whatever....

 

I was on the opposite end of the scale when I bought my Disco1 300tdi (Bosch pump also); the fisherman I bought it off was a right skint'flint n had unwound the fuel screw, n anti'clockwise turned back the  starwheel; it was horrible to drive, when I first got it; very lazy getting outta junctions etc n its general lethargy was TBH a danger to drive - it did manage to get 40/42 MPG in that 'tune'; after welding new drivers sills into it, I brought it for its commercial test, n the tester apologised afterwards saying he turned the starter with it runnin, as the emmissions readings were that low he doubted the engine was running...

 

Ive since turned it up; 2 rotations of the startweel, n I had to get a new fuel screw for the pump as the threads were wanked; looks like they were using vise grips or whatever to unscrew that; I get 34/35MPG since but its a small price to pay for the peace of mind of the extra power n no being caught at a junction - I marked everything on the pump so I can return to 'tortoise' pump setting for the test again....

[bub2006]

Chompy had it, I had it before sam. I don't exactly know what chompy did though but I did post up an explanation from chompy a bit back about it. The problem with anything like this is you don't know who has done what to get it back standard. If I had modded it I'd know exactly shat was done.

[beko1987]

I know it doesn't feel as fast today after I turned the screw on the top of the ufo under the cap up 2 turns and backed the fuel off another quarter! Still has black smoke on the throttle blip though. Needs a much firmer prod of the go pedal to gain fast speed! Made me realise just how rapid it was! I won't go changing things back now though, I'll wait for Saturday.

 

It needs someone who knows what their doing now! I'd like to keep the modified setup if I can, it was nice and rapid, but it needs to have the smoke linked at all costs really, otherwise it will kill the car as I won't be able to get an Mot, which would be a shame.

 

Hopefully Danny can tweak it about, then give me an idiots guide to tweak it back up so I can just twiddle it at mot time! That would work

[Guest Hooli]

That screw on the top sets the base fuelling for idle. However as the pin underneath has been changed it'll still get smokey as the boost comes on.

 

I still say a quarter turn anti-clockwise on the pin would probably do it, but I seem to recall saying it can't be done for some reason?

[beko1987]

I turned it out 2 turns and it's been fine so far, bit down on power now, but hopefully more economical on fuel for this week... I think the screw at the top adjusts the height of something, rather than rotate the pin but nothing exploded in a cloud of veg on the drive in this morning!

 

I'm at our work party on friday so quite glad Danny said to be at his for midday on saturday, can get medium drunk, wake up at 10, drink coffee and smoke rollys until 11.15 then get driving to his!

[Guest Hooli]

The screw on top controls how far down the pin sits at rest. So that's the base fuelling when off boost.

 As the engine comes on boost the diaphragm the pin is attached to is pushed downwards increasing the fuelling.

The pin has an eccentric shape, so turning it adjusts how quickly the fuelling goes up as it moves downwards.

[beko1987]

Ah so I've de-tuned it! Which I suppose makes a difference on light throttle, but pinning the pedal down still makes it move to the same max position that lets it burp out loads of smoke.

[Dave_Q]

But this car has a ground pin and a previous owner has said not to turn the pin or bad times.

 

Just a thought, if its on-boost fuelling that's the problem, can you present it for test with the boost hose to the pump disconnected and a golf tee jammed in the end of it?

[Guest Hooli]

I thought there was something about not turning the pin mentioned, I couldn't remember what.

[beko1987]

i thought it was not opening the whole UFO up and physically turning the pin, I just popped the cap off and undid the locknutted screw 2 turns.... worried now (although it didn't break, I just won't play with it anymore)

 

I tried taking the boost hose off and revving it and still got the soot, didn't bung it up though.

 

Meh, I'll wait until Saturday. Want to find out how it all works anyway and maybe get it de-tuned slightly for more mingebaggeryness with the fuel, it's nice to be able to do 80 in 3rd but I can't say when I last did it bar last week to clear it out in the hope it sorted it.