Xantia 1.9TD Bosch, rough start

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citroenguy
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Xantia 1.9TD Bosch, rough start

Post by citroenguy »

Hello

I have recently got a little niggle with my Xantia 1.9TD.
When starting from cold It needs a few more cranks than usual. Also runs a bit rough for about 15 seconds.

The third symptom is that it also makes a ticking noise, mostly when cold. Sounds a bit like lifter tick or engine knock.
Cannot hear anything from the block or head with stethoscope.

Was thinking about needle lift sensor or possibly crank sensor, if it plays a role... I think it only affects the "ignition timing/correction" that is electricly adjusted (VP20 pump)

Read the fault codes with Lexia, and it has a temporary code for needle lift sensor.

So..
Can the needle lift sensor give these issues?
I have various repair handbooks and wiring diagrams for C5 mk1, Xantia, XM, Berlingo and C3 mk1.
I have Lexia/Diagbox (Sweden) and Servicebox/sedre
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Stickyfinger
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Re: Xantia 1.9TD Bosch, rough start

Post by Stickyfinger »

I would also suspect a glow plug or two....
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Re: Xantia 1.9TD Bosch, rough start

Post by citroenguy »

Hm, maby schould measure them.
I changed them when i got the car, about 2.5 years ago. Could be broken anyways, you never know with parts these days,..
I have various repair handbooks and wiring diagrams for C5 mk1, Xantia, XM, Berlingo and C3 mk1.
I have Lexia/Diagbox (Sweden) and Servicebox/sedre
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Re: Xantia 1.9TD Bosch, rough start

Post by Stewart(oily) »

Tired leakoff pipes? try squeezing the primer bulb before attempting the first startup, see if it makes a difference. The needle lift sensor is built into one of the injectors ISTR, one of the simple diagnostics was to disconnect it, they run slightly different if its working.
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Re: Xantia 1.9TD Bosch, rough start

Post by citroenguy »

Stewart(oily) wrote: 12 May 2024, 22:09 Tired leakoff pipes? try squeezing the primer bulb before attempting the first startup, see if it makes a difference. The needle lift sensor is built into one of the injectors ISTR, one of the simple diagnostics was to disconnect it, they run slightly different if its working.
Tried "pre-priming" today, couldn't see a difference.
No diesel smell or leak.
Is there a one way valve in the primer bulb? Or somewhere else?

I'll try unplugging the lift sensor
I have various repair handbooks and wiring diagrams for C5 mk1, Xantia, XM, Berlingo and C3 mk1.
I have Lexia/Diagbox (Sweden) and Servicebox/sedre