Loud Knocking Xantia 1.9td Lexia fault update - SUCCESS

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shaunlfc1
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Loud Knocking Xantia 1.9td Lexia fault update - SUCCESS

Post by shaunlfc1 »

Hi all,

My 1998 1.9TD Xantia with air con was fine until I went too leave work tonight, the engine diagnostic light comes on and stays on and the car sounds horrible, well a loud knocking noise. It seems to start and idle fine but the noise is horrendous.

I was told to change fuel filter and put in some injector cleaner, as it might be a blocked injector. I've done this but no change but I didnt run the car too long so was wandering if I've not given it enough time for the cleaner fluid to get to the injectors!

All your advice would be hugely appreciated.

Many thanks,

Shaun
Last edited by shaunlfc1 on 26 Oct 2010, 12:58, edited 2 times in total.
Peter.N.
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Post by Peter.N. »

Sounds as though something has upset the pump timing. One of the injectors has a wire connected to it, check that it has not come off, otherwise the injector maybe faulty.
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Post by citroenxm »

Thats a symptom of Slipped Timing belt, or as peter says pump timing!

If your a little DIY then check your timing Pin holes in the cam sprocket and injection sprocket and also the TDC pin hole in the Flywheel - hole behind the starter...

If its out, one of these will not line up..

Paul
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shaunlfc1
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Post by shaunlfc1 »

Thats brilliant chaps thank you..... I take it if it has jumped the only way to sort it is to take the belt off and realign everything which would mean I might as well do a cambelt change even though its not due?

What would cause the belt to jump, would seem impossible to me?

Thanks again,

Shaun
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Post by citroenxm »

Belt tensioner problem of some sort, a shreadded Aux Belt, thats gone behind the Crank Pully...

Paul
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project

A very sad...
1994 XM 2.1 d auto
shaunlfc1
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Post by shaunlfc1 »

The aux belt tensioner was replaced 3 months ago as the aux belt was running slightly off the pulley, the bearing had collapsed in the pulley. It was done by a Peugeot/Citroen specialist.

I checked the belts tonight no sign of damage and they all seem to be running true!

Would it be a full cambelt change if it has jumped?

Cheers....
citroenxm
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2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising
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Post by citroenxm »

Safest thing to do - incase theres any damage to the Belt teeth, belts are only around the 25 quid mark...


Paul
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project

A very sad...
1994 XM 2.1 d auto
shaunlfc1
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Post by shaunlfc1 »

Just spoken to a Citroen specialist, apparently there is no margin for error on that engine, if the timing is out, it'll simply smash the valves up and will not run.

The fact it starts and has been driven 5 miles back from when the noise first started, would indicate the timing is fine?

Could it be the cold start mechanism stuck open?

Cheers,

Shaun
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Post by Dommo »

It's the same engine that's used in 306s, and I know from my pug306.net forum days that being one or two teeth out is very possible. Especially on the fuel pump for example, as that doesnt affect the valve and piston timings, only the injection timings.
citroenxm
Posts: 8061
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2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising
x 70

Post by citroenxm »

Sorry

Yes there is!

The belt CAN go a tooth out and be ok!
JUST

Your specialist isn't that special then..

Ive had a couple do this... I guess you should check it again

Paul
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project

A very sad...
1994 XM 2.1 d auto
citroenxm
Posts: 8061
Joined: 30 Dec 2004, 23:10
Location: Somewhere in North Wales, Anglesey
My Cars: M reg Xm S2 2.1td Auto Exclusive. 269k and rising
L reg XM S1 V6 12v Manual SEi
L 94 XM 2.1 TD auto total resto

2008 Peugeot 207 Sw 1.6 16v hdi. 217k and rising
2010 Peugeot 207 SW 1.6 8v HDi 161k and rising
x 70

Post by citroenxm »

Thanks Dommo

A good back up, but you just beat me! LOL

Paul
Sharing a pug 207 1.6 hdi Sw 16v.
M reg Xm 2.1 td auto exclusive S2 269k and rising
L reg XM V6 12v SEi auto .. Light project

A very sad...
1994 XM 2.1 d auto
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99 Xantia Activa
98 2.1TD Xantia
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Post by Dommo »

No problem :P

It's definately possible on the fuel pump! Which causes running like a bag (knocking)
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Post by Peter.N. »

shaunlfc1 wrote:Just spoken to a Citroen specialist, apparently there is no margin for error on that engine, if the timing is out, it'll simply smash the valves up and will not run.

The fact it starts and has been driven 5 miles back from when the noise first started, would indicate the timing is fine?

Could it be the cold start mechanism stuck open?

Cheers,

Shaun
That is not so I'm afraid, I have on a couple of occaisions inadvertantly fitted the belt one tooth out because of not fitting a flywheel location pin, on both occaisions it was retarded and the effect was that it was difficult to start and ran rough but didn't damage anything. I'm sure if it was one tooth advanced it could give the symptoms you describe, although to be fair, the natural inclination if the belt slips is to go retarded which would make the engine quieter if anything. I still think the problem could be due to the injector with the sensor.

Is it knocking on all cylinders or just one - one knock every two revolutions?

Peter
shaunlfc1
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Post by shaunlfc1 »

The problem has been diagnosed, its the electronic cold start part of the fuel pump. Its chucking out a error code 144 which cross referances as this part of the bosch pump.

Everything else was checked out, timing was fine so are the injectors. If any of that was at fault, it would be chucking out loads of smoke and it wouldnt run very well, which is the total opposite, no sign of smoke, starts and runs fine apart from the noise.

So thanks for everyone's input much appreciated, my next question is has anyone repaired a pump with this 144 fault? If so where did you get the part and how difficult is it to fix?

Many thanks,

Shaun
Peter.N.
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x 1199

Post by Peter.N. »

Must be that its running over advanced then, you could try retarding the pump a little.

Your best option would be to fit a mechanical pump, would probably cost less than repairing that one.

Peter
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