How long does automatic sync last?
The automatic ignition advance unit is a component of vehicles with diesel engines. Of course, gasoline and diesel engines work on the principle of internal combustion, but they are completely different and require different means of controlling the flow of fuel during operation.
Gas burns much faster than diesel. With diesel fuel, combustion can occur long after timing reaches TDC (top dead center). When this happens, there is a lag that negatively impacts performance. To prevent lag, diesel fuel must be injected before TDC. This is the function of this automatic ignition advance unit - basically, it ensures that, regardless of engine speed, fuel is delivered in time for combustion to occur before TDC. The unit is located on the fuel pump and is driven by the final drive on the engine.
Whenever you drive your diesel car, the automatic ignition advance unit has to do its job. If this is not the case, the engine will not receive a constant supply of fuel. There is no set point when you should replace the automatic ignition advance unit - in fact, it works as long as it works. This could extend the life of your vehicle, or it could start to deteriorate, or even fail completely with little warning. Signs that your automatic ignition timing unit needs to be replaced include:
- Sluggish engine
- More black smoke from the exhaust than is normal with diesel operation.
- White smoke from the exhaust
- Engine knock
Performance issues can make driving dangerous, so if you think your automatic ignition timing unit is defective or has failed, contact a qualified mechanic to help you replace the defective part.
