Siena Diesei 1.7 in cold failure by smoking

Hello, I have a Fiat Siena 1.7 Diesel Turbo and it happens to me that when I start the engine in cold (all night) begins to smoke at a disappear pace (Papapa ---- PA-Papapa

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Apapapap, the lines indicate proper functioning), it looks like an injector drip. Change fuel by putting better quality and adding a clean injectors and I continue with the problem, which leaves when the engine is at the medium operating temperature. This problem happened to me when I was going on vacation and I had to load the fuel (YPF Eurodiesel) and I improved when I got to CABA again and load the usual fuel (Axion-Esso). The engine has 150000km. I have been told that it can be the EGR valve, but I honestly don't know, if someone can guide me in the solution I will be grateful. SLDS.

Hello I have a Chevrolet Combo Van 2005 1.7 Diesel, I had a problem with the power of the vehicle the puff output too slowly and on the road I did not pass the 100k/Hy in the technical review they rejected me with 4.25 pollution and the standard is 2.5 and for more auction to the last one it stopped at 2 blocks, I turned on the shot again Repair it, inject pump, computer etc. But nobody assured me that if towards those tremendous expenses it would be good, and all because I did not throw fault codes, but supposedly they cleaned the EGR, mm I set out to repair it, since I am a technician in mechanics, electronics and automotive electricity but I do not dedicate myself to that !! Years ago I studied it and then my plans changed !! Well to the grain !!, and this I hope to help you because there is very little information!, I started to disassemble the electrical connectors, to clear these are on the injectors and the EGR valve is connected in the admission of the air and its pipe reaches the exhaust multiple connected to the turbo since the function of the EGR valve is to return the gases to be required of ay the little pollution if it is covered by excess vehicle It contaminates or tells you !, And apart it gets slow and the engine noise is rare! Well the eg my I remain without drums, I have photos and videos if I could publish them for greater understanding since it is difficult to express in words, but at least they know what to tell a mechanic I wanted to save my job and for a lazy one they screwed up the same hahaha but at least not as someone who has little or no knowledge

You see another to tell you that my combo are step with 0.8 in the technical review after the failures and has an acceleration that does not even tell you how new and I have been without any problem and I save me I do not tell them the amount of money, sometimes the fuel is very rare that it is but not impossible the ideal thing is to see by see EGR valve when these symptoms are presented and the solution will be

Thank you Guliber, when I mislead I will check the EGR to see what I find.

Hello, the problem is that the injection pump is behind, they must advance 1 and a half degree to more depending on the