Hi I have a question. I have a Fiat Ducato 2.8 TDI 1999 years. In winter, the engine started without any problems even without preheating. The car then three months worth, and now the cold can not nastartovat.Akumulátor revolves long time, but still nothing. If you connect it via jumper cables to another vehicle after a while starts. Warm starts, but only if I depress the accelerator pedal.