What are the reasons for a car's ignition missing one cylinder not working?
1 Answers
There are many factors that can cause an engine to miss a cylinder. Here are several reasons why a car's cylinder may not be working: 1. The fuel injector of a certain cylinder is clogged, stuck, or has poor atomization, or the high-pressure fuel pipe is broken; 2. The intake and exhaust valves have too much working clearance or are even broken; 3. The piston ring is broken or stuck, causing cylinder scoring or even cylinder barrel damage and air leakage. Here are some inspection and handling methods: 1. Check the spark plugs and cylinder wires. 2. Perform a fuel pressure system inspection. Check the fuel pressure gauge and fuel pressure gauge components, and connect the fuel pipe and gauge. Start the engine and let it idle. The fuel gauge reading should be within the range of 270~320 kpa. 3. Check each cylinder's fuel injector. Let the engine idle, and disconnect each fuel injector plug one by one to check if there is any change in idle speed. If the idle speed decreases similarly when each cylinder's fuel injector is disconnected, it indicates that all fuel injectors are working normally. 5. Inspection of the fuel pump and its circuit. Fuel pump inspection: Unscrew the fuel tank cap. When the ignition switch is in the ON position, you can hear the sound of the fuel pump operating at the fuel filler port. Under normal working conditions, the fuel pump should operate for 2 seconds when the ignition switch is in the ON position. If the fuel pump does not operate, first check if the fuel pump fuse is blown. Check for continuity between the PGM-FI main relay and the connector terminals, etc.
