Jianghuai Ruifeng Business 1.9t Sometimes the throttle is stuffy. What's the problem?

Hello, owner! Check whether the diesel filter element is blocked by water and whether there is too much water in the oil-water separator! Is the diesel pressure normal? 200pa！ Dirty oil metering valve leads to adjustment of card issuance! Whether the nozzle is blocked and the atomization is good! If there is something wrong with your car, I hope my answer can help you. Ask the car master. 4S shop professional technician, 10 minutes to solve.