Diesel noise now quieter....why ? - Alfa Romeo Forum
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Diesel noise now quieter....why ?

Ove the last few weeks I'd noticed that my 1.9 diseasal was making more of tractor noise than normal, especially when booting it.

The car does ~140 miles a day is well maintained, good power etc etc.

Anyway, I checked the injector correction values in FES and a couple were about +/-2.5

I know the car has had work done (before I got it) as the rocker cover and injectors etc are all spangly and clean.

So thinking that maybe the injectors hadn't been coded, I checked the codes in FES.
They were all in fact correct, so after pulling up the code for each, seeing they were ok, I just hit <OK> instead of <CANCEL>.

The car is really much quieter at idle and when booting it and also the power delivery feels smoother.

Is "recoding" the injectors something we should be doing as almost a service item ?

Oh...the correction values are now around 0.4.
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Also noticed this - think when its just really cold its loud?
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It may be louder when the engine is cold, but what's happened to mine is S.H.I.T.

...........Self Healing Intelligent Technology

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diesel , noise , quieterwhy

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