2.0Hdi Sudden rough running

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jcmnz
Posts: 10
Joined: 02 Aug 2022, 04:00

2.0Hdi Sudden rough running

Unread post by jcmnz »

Hi, my very very trusty, always reliable 308SW 2.0 HDi RHH engine has suddenly decided to run rough from cold. It fires and idles straight away, but splutters and puffs out blue-grey smoke. No coolant loss...
There has been a long running issue with the air mixer - broken actuator arm that I've patched; and this fault still comes back straight away - reporting 'too closed'. Diagbox does show some clues that there's been a lack of air:
ExhaustLineInfo.png
The only other odd thing is the fuel temperature...showing as very high, after a cold start at 16deg C ambient:
FuelCircuitInfo.png
This car is approaching 300,000km, no current faults on any other system than the injection/ignition! Any ideas on where to start?
Thanks in advance
Last edited by myglaren on 30 Apr 2025, 07:53, edited 1 time in total.
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