Quote:
Originally Posted by Quintin
I wouldn't bother. This happens with all diesel engines at increasing altitudes. The problem is that you will never get the mixture exactly right. Injection pumps are impossible to set up correctly without specialist equipment and furthermore you may find you will run lean when you get down to "normal" altitudes. This can be potentially harmful for a diesel and is far worse than running rich.
Q
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I'm sorry, your advice is incorrect.
Diesels run leaner than stoichiometric; petrol motors always richer than stoichiometric. Stoichiometric is defined as just enough fuel for the air to burn completely.
A diesel, when overfueled, can develop very high EGTs. A petrol motor can develop high EGTs when underfueled.
So running at high altitude can cause high EGTs and damage an engine. This can be mitigated by installing a turbo to supply more air but not turning the fuel up..
All underfuelling a diesel causes is low power output.
Charlie
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Unimog U500 w/Unicat
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