Please help in my Xsara Picasso

Let's see if we give it. First, see if it throws a lot of smoke by the escape, and if so, what color it is. The normal thing with high consumption is that it throws it black, which indicates dirty injectors, failure in the injection pump or broken turbo. For all this, the only thing you can do without going to the workshop is to buy a Wynn's boat or similar cleaning of the gas station, give it a while with the turns up (more than 3,500) and that there is luck. As you have no RPM indication, you could put it in second to 60, third to 90 or fourth to 120, it depends on where you do, so 10 minutes without loosening.
Another possibility is that the air filter is dirty, but I think you said you had already looked at it.
Another is some air signal hose. I have an Octavia and I had an idiocy of those, and if I get to the workshop, it would have cost me a kidney. I discovered it because in a ramp I did not stop the car and found out the theme releasing any hose and throwing the smoke from a pressure cigarette for it. The smoke appeared on the other hand, I put the hose, a plastic flange and run.
I hope you are lucky, and as a last option, the workshop, because with these things, they nail you and stay so panchos.
Greetings

Thank you very much to the 1st that I will do is make an additive for the Gasoi that brings me a colleague who has a spare store is called the Forte additive for injects I do not know if it will sound to you, for this I have to have the stroke full or not necessary? , the 2nd is putting it at high revolutions as say, then I know much about this but this engine seems to me that it does not have turbo is the 2,000 HDI 90 hp. It is Motor Colin Rain or I do not know that, if I am wrong to correct myself, but I have been I put, only when starting cold if it pulls a little white smoke, I have changed air filter, gas filter, oil filter and made the oil of the most expensive there is, which happens that I perishable that in a city at a non -abrupt speed I spend 9 liters and on the road to 110 I spend 7 liters, when a car of this with 85,000 km. Royal and 6 years that has its average consumption should not exceed 7 liters mixed, I also see the car a little Perron I have to step on the Pedal Asta background so that it takes me speed, I do not know much about this but for me I have to have the dirty injuries of the Gasoi Biodiesel or the dirty bomb I will try with this addictive for Gasoi and I will tell you, anyway, thank you very much for the attention that you are making, you are making it.

Hello good again, I am going crazy, yesterday the additive and loads the car of Gasoi asta no more, because I leave the gas station and I mark the computer of I have to do with the gasoi that there is that which is up to 60 liters 380 km., I say in here something happens, with the car stop Asta 24 liters of consumption at 100 km., You do not think that the computer can fail or something that is rather electrical or the switchboard. At the end I will have to take to the Citroen, the computer also resets to put all the values ​​to zero.

I would forget the clean injectors because those injectors in your car have finer holes than a hair and it will not do anything to you, but if you say that you run less ..... Look at the turbo sleeves, which if it has turbo, stick a floor to the accelerator and see that they inchen well and do not blow the air anywhere. Injectors and Yevalos to verify that they can be injecting more.

Hello good I have made a full one, an additive for injectors I have traveled 100 km. By highway, road and town hurrying the marches quite quite and times on 170 km highway. per hour, I have responded again and consumed me 7.5 l. On average, you think, I don't know if the additive will have effect or something you think is regulated, it is a lot of consumption or is fine. Thank you and greetings.