chatelot16 wrote:
Citroen ZX is for me already too modern, maybe a minimum injection stop has been added for a question of pollution
in descent with prolonged engine braking, without mini injection the engine cooled, when it is necessary to inject again it is likely to smoke a little ...
I may be wrong then!
I never "checked" for sure.
I have a long descent with a pin at the end.
With the Xantia, by anticipating the braking, the engine became discreet, then there was resumption of the "snap" out of the turn (indeed, in a furtive way, a little more noisy, which corresponds to the cooling that you mention, it was almost like a re-start).
To 350 000, I had a start-up problem and I was told by a diesel specialist that it was a solenoid valve inside the pump. The aim was to achieve certain values in terms of normalized consumption / CO² emission, by cutting the injection in the engine brake position.
On the ZX, I didn't have this phenomenon. This "restart" noise.
[The motor bases were the same, the 1,9 D from the XUD].
So I deduced - but not checked - that on the ZX, there was not this break. That the injection seemed to continue, even when I raised my foot ...
I can imagine being wrong! I do not know if they were Bosch. Rotative, that's for sure.