Do you have any good suggestions for Volkswagen cold start?

Hello, Volkswagen cold start means that the car starts directly without preheating, especially in the cold areas in the north. Driving without warm-up is like running without warm-up, and it is easy to get hurt. For automobiles, engine parts, especially the crankshaft and crankshaft pads, are easy to be strained, which will reduce the driving ability of automobiles and shorten the service life of engines. The best way to protect the engine is to warm up in advance. When the engine runs at no-load for 5 to 10 minutes, the diesel engine will use 15 to 20 minutes, and the water temperature will be kept between 60 and 80 degrees, which is the optimal temperature. These measures are as follows:

1. 10W or 5W high viscosity engine oil is suitable for winter;

2. Too much carbon is deposited in the intake system and intake valve roots, which leads to too thin mixture concentration during cold start;

3. The throttle valve is seriously dirty and the air intake is insufficient;

4. The speed of the starter can't meet the requirements;

5. The contact resistance of the battery connecting wire is too large; The battery power is insufficient;

6. The viscosity of transmission lubricating oil is too thick, resulting in too great engine running resistance;

7. Insufficient compression pressure of engine cylinder;

8. High-voltage ignition system-the performance of spark plug is poor, and it can't produce an ideal spark enough to break through the mixture;

9. The spark plug is unreasonable; Engine coolant temperature sensor fault.