Julie
Member Since: 07 Oct 2017
Location: Nantes
Posts: 482
 
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If the system is too dirty, things will get even worse if you heat up the system on the motorway.
Clean your EGR. You should do it by hand - because chemical products (which are also available) loosen the sooth at once. Injectors may end badly if they get too dirty
https://www.drivingline.com/articles/egr-diesels-necessary-evil/
The sensors also cause problems but imo you should watch out for sooth in the EGR
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30th Sep 2020 10:10pm |
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blackwolf
Member Since: 03 Nov 2009
Location: South West England
Posts: 17372
 
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KMBXXX wrote:... What you say about hot engines does remind me of another issue. She runs like a dream with 91k on the clock but was a little bit wobbly (a couple of minor stutters at low speed) on two days when the temperature was in the 90's. I thought that strange because, as you rightly say, diesels run better when hot.
Any compression-ignition engine will run best when the engine itself is hot (which helps efficient and full combustion) but when the induction air temperature is as low as possible, which increases air density and hence the amount of oxygen drawn (naturally-aspirated) or blown (charge induction) into the combustion chamber on the induction stroke. This is of course the reason why intercoolers are provided.
So ideally you want a hot engine on a cold day. |
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1st Oct 2020 8:14am |
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