What are the methods to eliminate the mixture from being too thin?

Elimination method of automobile mixture being too thin;

1. Check the oil level in the float chamber. If it meets the requirements, check whether the main measuring hole is adjusted correctly and whether it is blocked. If there is something wrong, please repair it.

2. If the oil level in the float chamber is too low, first determine whether it is caused by the internal oil circuit of the injector or the external oil circuit of the injector, and then locate the parts in turn.

3. Check whether the air flowmeter leaks from the throttle valve to the air inlet of the cylinder head, and spray it with cleaning agent. When the speed changes, it will leak.

4. Check whether there is any sound of air leakage from the exhaust pipe to the oxygen sensor, and the rest is nozzle oil, spark plug, oil pressure, carbon canister, etc.

Solution of over-lean mixture;

1. Remove the pipe joint of the oil inlet of the injector and observe the oil output of the oil pipe. If the oil output pressure is high and the flow rate is large, it is a fault in the injector oil circuit. Adjust the oil level of the oiler; Dismantle the fuel injector, and check whether the float is stuck, whether the triangular needle valve is stuck, and whether the oil outlet is blocked. After the above steps are found and repaired, the fault can be eliminated.

2. Remove the pipe joint of the oil inlet of the injector and observe the oil output of the oil pipe. If the oil outlet pressure is low and the flow rate is small, it is a fault in the external oil circuit of the injector. Then check the oil pipe, switch and filter screen to eliminate the fault.

3. If there is no fault according to the above steps, check whether the branch pipe pad leaks or the connecting pad of the injector base leaks.

Extended data:

Causes of lean mixture in engine;

Too lean mixture is mostly caused by the failure of the control circuit caused by the unclean fuel injector or the low oil pressure of the fuel pump, which can also lead to the poor signal of the intake pressure sensor and the phenomenon of too rich. Do you want to look at the data stream to see the fuel injection pulse width? The voltage variation of the oxygen sensor has been tested. Whether there is acceleration weakness depends on the test run. The main reason for the lean mixture is insufficient fuel injection.

Various intake sensors can't accurately detect the intake air volume, which leads to insufficient fuel injection and excessive carbon deposition, and the fuel injection is adsorbed by carbon deposition, and the closed-loop control of oxygen sensor fails, and the intake air detection is inaccurate.

Various intake sensors can't accurately detect the intake air volume, which leads to insufficient fuel injection and excessive carbon deposition, and the fuel injection is adsorbed by carbon deposition, and the closed-loop control of oxygen sensor fails, and the intake air detection is inaccurate.