2014 3.0T Range Rover multi-cylinder fire

Model: 2014 Range Rover Creation Extended Edition
Engine description: 3.0T V6 340PS direct injection gasoline engine Mechanical supercharger
Transmission description: manual automatic transmission (8AT)
Fault phenomenon: weak acceleration, violent shaking at idle speed, and the meter shows nearly 140,000 kilometers
Inspection process:

1. When the accelerator pedal is stable at about 800 to 1500 rpm, the instrument will light up the engine fault light;
2. Computer diagnosis, it is found that multiple cylinders are misfired. Combined with the data flow, the three-way catalytic converter and the high-pressure oil pump are checked. It is found that the three-way catalytic converter is blocked, the high-pressure oil pump camshaft is seriously worn, and the top cup is damaged

Solution: Treat the three-way catalytic converter, replace the high-pressure oil pump top cup and the high-pressure oil pump camshaft, and troubleshoot

Fire fault inspection ideas (from simple to complex):

1. Ignition system (ignition coil, spark plug)
2. Fuel system (fuel rail pressure, internal leakage of fuel injector, etc.)
3. Is the cylinder pressure normal?
4. Timing (chain elongation, sprocket damage, etc.)
5. Consider whether the internal parts of the engine are seriously worn in combination with the mileage
6. Crankshaft position sensor