Hello . I am the owner of the Audi A3 8L 1.9 TDI 90 km.
The problem is that when starting, on a cold engine, it will kick white. The smell of rather unburned fuel (although I may be wrong). There was a problem with candles before. They are all functional, I checked. Just don't rummage. If the sensor is detached from the water temperature, it will heat normally. If I step on, they don't heat at all. But it's probably the cube's fault, because even on a new sensor (without putting it, drained with cold water from the fridge, they also do not heat). In general, even on a connected sensor, where the candles did not heat, he also kicked, but now despite the fact that he smokes, if I add gas to him for 2 thousand turns, something shakes him, as if he was choking. I went through a lot of topics, some say it is coolant, others say different. I don't know what it can be anymore, because a lot has been done with this car. For example, injection angle and ignition timing (because the timing was changed) before the operation, on a cold engine it was not choked, but there were also exhaust fumes. Even if it was well over +2 degrees. So I doubt it's a couple. The coolant does not decrease, there is less oil, but I have already made over 7,000 km on this oil, so something could have gone.
I don't know what the reason may be anymore, so advise what it could be, consider and check it out if I can do it.
The problem is that when starting, on a cold engine, it will kick white. The smell of rather unburned fuel (although I may be wrong). There was a problem with candles before. They are all functional, I checked. Just don't rummage. If the sensor is detached from the water temperature, it will heat normally. If I step on, they don't heat at all. But it's probably the cube's fault, because even on a new sensor (without putting it, drained with cold water from the fridge, they also do not heat). In general, even on a connected sensor, where the candles did not heat, he also kicked, but now despite the fact that he smokes, if I add gas to him for 2 thousand turns, something shakes him, as if he was choking. I went through a lot of topics, some say it is coolant, others say different. I don't know what it can be anymore, because a lot has been done with this car. For example, injection angle and ignition timing (because the timing was changed) before the operation, on a cold engine it was not choked, but there were also exhaust fumes. Even if it was well over +2 degrees. So I doubt it's a couple. The coolant does not decrease, there is less oil, but I have already made over 7,000 km on this oil, so something could have gone.
I don't know what the reason may be anymore, so advise what it could be, consider and check it out if I can do it.
