smelling gray smoke from exhaust

Right gentlemen 307 2007 confort model in the first run, smelling gray white smoke is thrown 2 3 minutes and shaking then it goes like clock car and something I noticed in the first run 3 4 times if I make intermediate gas, this is not a problem.

as teacher, the vehicle is diesel or gasoline

My teacher said that 1.6 diesel was normally 90, but the jeep was thrown.

probably like injectors. But first, throw an injector cleaner into the tank and get a quality brand like würt, use it a little at low gear at high speed, if not, have your injectors checked. it may also be caused by glow plugs. I recommend you to have it checked with the original software.

It sounds like that to me, because when I throw diesel, half or horse, if I get full, the car is shaking at the first 2nd and 3rd run and it doesn't get an actuation immediately, it feels like there is dirt in the warehouse, then it gets cold, it probably freezes to normal so if wurt will clean them too?