What causes the dreaded injector failure

**rapport25** · 20-07-2010,09:25 AM

As the titlle suggests. Is there anything that can be done to prevent them failing?

DSG4ME · 20-07-2010,10:05 AM

The only thing I can think of is the possibility that they get some muck in them, and then burn out working too hard.

**rapport25** · 20-07-2010,10:11 AM

Yes that is what I would imagine but it seems a common thing on the passat.

Touching wood now

I have never had a failed injector, I always use millers ever fill up with shell diesel. Also I never let it run below 1/4 of a tank.

Fingers crossed I will prevent failure then

.

**martin1810** · 20-07-2010,11:52 AM

Rumour suggests it is siemens PD injectors that fail due to an internal electrical malfunction. If people who had them replaced posted on here. Which type of injector it was, we could find out more.

**rapport25** · 20-07-2010,12:03 PM

Originally Posted by martin1810

Rumour suggests it is siemens PD injectors that fail due to an internal electrical malfunction. If people who had them replaced posted on here. Which type of injector it was, we could find out more.

Hope so. Also any way to tell you have these fitted vin etc....

Rappy

**johnloaderuk** · 20-07-2010,12:50 PM

This company claims they can repair PD injectors (amongst other things), although I've only read it on their web site, so may or may not be correct.

http://www.feather-diesel.co.uk/cont...air/repair.php

**martin1810** · 20-07-2010,03:08 PM

As far as I can tell all passat 2.0 tdi engines are fitted with siemens piezo pd injectors. I think they can only be repaired by the manufacturer. Unless anyone knows different. The 170 hp has a slightly different injector to the others.

**g-black** · 20-07-2010,03:46 PM

The BKP PD 140 engines are the worst for them. Late 05 and early 06 are the worst offender. After researching all over the world when mine went, I found it seemed to be the colder conditions got them. Mine went on a cold morning at 65mph on the motorway with snow on the hardshoulder! Scary :s

But yes seems to be an electrical problem cause the wiring loom usually needs replaced at the same time (about £60)

**fat controller** · 20-07-2010,05:27 PM

Once I get mine replaced, I think I'll stay in the habit of using Millers in every tankful, in an attempt to prevent any more failing on me.

Its a real shame that this engine has issues like this, because its a belter when its running - I just hope that this will be my one and only experience of this.

**martin1810** · 20-07-2010,07:40 PM

I doubt a fuel additive will help. (But it's a nice placebo). The injector control is piezo crystal like some electric lighters but backwards. On the lighter you squash the crystal and electrikery comes out to light the gas. On the injector you put electric stuff in and the crystal expand to close the valve. I believe it is this bit that fails.