How do injectors fail on the TDCi?

[andy_quantum]

Probably one for Jon here, but curious how the injectors can fail on the TDCis.

Fresh off the back of DMF/starter/clutch replacement on my Mk3 03 67k LX TDCi, now looking at new injectors. Apparently they cant be recoded, and best to replace them

It's quite a large bill, and the last fortnight has cost me pretty much what the cars worth

Not like Ford actually care or anything, the letter I got back in response to my complaint about the DMF failure was basically off, it's wear and tear.

[Jon GT2]

Hi Andy,

I have never had a full explanation from Ford but have been led to believe its related to varnish build up caused by fuel related quality issues.

Regards,

Jon.

[andy_quantum]

Thats interesting, thanks Jon

I'm asking as the dealership who just replaced mine on the TDCi didnt really know why they needed replacing, just that the advice they have off t'system says replacement injectors will make the car work again.

Now, if there is a push towards fuelling being the issue, it's more of a trading standards thing isnt it? I've read that people who have tried to take this further with Ford have been told the fuel is of substandard quality, which lead to failure of the injectors. Cant imaging that'd sit well with the fuel companies

Curious to see what Ford make of my complaint if anything, if it does come back as faulty fuel I have a batch of receipts from the last 12 months (company expenses) so will see what they make of that

[chaosss]

I recently had "Cyclinder 1 above knock threshold" on my 99k Mondeo TDCi.

I had them recoded with updated software. Apparently the new software has a higher threshold before it registers a fault.

About 1k miles on it seems okay but I am wary of it failing again.

You can also send the injectors of to be sorted. If you remember which injector was for each cyclinder you don't need to reset them. You can't buy injectors from another Mondeo though. They are coded to each car.

[NST]

Jon GT2 said:

Hi Andy,

I have never had a full explanation from Ford but have been led to believe its related to varnish build up caused by fuel related quality issues.

Regards,

Jon.

Jon,

In your experience would say that the TDCI engines are more unreliable than the petrol engined models?

cheers NST

[Jon GT2]

Sorry for the slow reply i have been away,i see far more Diesel Mondeos than petrol so its hard to give a fair assesment but in general i would say yes they are more troublesome but have superior driving characteristics which is why i bought one myself.

I supplied a number of fuel samples to trading standards last year because of this issue but have heard nothing since.