The new Buick Weilang arrived at shop today, with only 30,000 kilometers on it, but seriously missing cylinders. Repairs were made elsewhere, but problem was never solved. The owner of car took car to 4S store, and they didn’t even give a guarantee, saying that problem was improper maintenance. The owner of car had no choice but to drive car to us.
First of all, we did a basic diagnostic, including replacing spark plug, ignition coil, and fuel injector, but it still reported that second cylinder was missing. We had no choice but to disassemble engine. The picture above shows eccentric cap we removed and adhesive on eccentric cap is peeled off. To save time when installing, eccentric cap is peeled off.
The picture above shows what it looks like after we removed engine and whole car still looks brand new. Since this car is new, we are still very careful and try to restore original look of engine. The driver is also looking forward, new car is good, how can it break down?
The picture above shows how it looks after we unscrew screws of main components of car. Since these are most important parts, none of them should be missing after dismantling. Before installation, these things must be cleaned. There must be no sediment on screws.
The picture above shows how we set up piston, which did not have enough cylinder. It can be clearly seen that due to carbon deposits, there are many colloidal substances on upper part, and piston is in high temperature and high temperature. ambient pressure, resulting in piston failure. I don't know if this fault exists in the car you bought?
In order for everyone to see this more clearly, we also took a close-up of piston. No wonder this car is missing cylinders? Since there are a lot of breakdowns due to a lack of cylinders in this auto network, this is just one of our cases. I hope everyone will take warning and not blindly do maintenance.
The picture above shows cylinder head of this car, and entire gas distribution system of engine is completed with it. After disassembly, no problems were found, and there was no air leakage. If there is a problem with it, it will be very troublesome to repair. Let's think about why this car has a bad piston?
Firstly, for American cars, this car still has a lot in common with previous Yinglang. The old Yinglang seen in past will break pistons of four-cylinder engines, which can be a quality issue with components. . But there is an even bigger reason, which is caused by our improper maintenance.
For new cars, you need to choose a regular car repair shop. For cars with a turbocharger, you need to use full synthetic engine oil, use as few fuel additives as possible, and do three cleanings in time to power your car faster.