If the timing chain is not replaced, it is highly likely to cause engine overhaul.

Timing belts are familiar to most of us car enthusiasts. Most engines in previous cars were equipped with timing belts, and manufacturers generally require replacement every 60000 or 80000 kilometers. If not replaced, if the timing belt breaks later on, it will directly cause the engine valve to be damaged. With the continuous improvement of the engine, the timing has gradually changed from a belt to a chain. The emergence of a timing chain has made many car enthusiasts believe that they will not spend money on replacing the chain, because most cars do not need to replace the timing chain, which can save a lot of money. But there is an engine whose timing chain must be replaced. If the chain is stretched too much, it will cause tooth jumping and ultimately fail to ignite, leading to valve jacking.

It refers to the EA888 engine equipped on Volkswagen and Audi cars, especially the first and second generation engines. There are many models used for EA888 engines, such as the Volkswagen series, Tiguan, New Passat, Magotan, and Sagitar. Skoda's Subaru, Haorui, Mingrui, Kodiaq, etc., Audi's Q5, C7, Q3, A4L.A5, etc. As the mileage of this engine increases, the chain will elongate. When repairing the car, we will use the timing data flow to determine whether the chain needs to be replaced. Replacing the timing chain is an improved version and belongs to the third generation EA888 chain. After the improvement of the chain in the third-generation machine, the mileage will be relatively higher.

After the first and second generation of EA888 engines reach a certain level of timing, they must be replaced. If not replaced, the consequence is that the valve will jump at any time, and if it jumps less, it will not jump. The common symptom is that the front foot stops the car and goes to the roadside to buy something, and when the rear foot starts the car, it may fail to start, resulting in gear jumping. So, car enthusiasts of this engine must regularly go to the repair shop to check the timing data. If it exceeds the specified value, replace it as soon as possible to avoid greater losses. The later improved third-generation EA888 engine chain can run more mileage.

Finally, when replacing the timing chain kit, be sure to choose original factory accessories. Follow me to learn more about automotive repair knowledge.