Suzuki Swift engine shakes when it is cold, and the algebra is high and low.

According to different models and designs, there are many reasons:

Air inlet:

A, air intake system leakage or blockage, etc. Will lead to.

B. Idle speed control part: stepper motor and throttle body are dirty or leaking.

C sensors such as air pressure, temperature and throttle position are abnormal, and the data is incorrect.

Oil pipeline:

First, blockage, patency, etc. Will lead to.

B. The electric fuel pump is abnormal or the fuel filter is blocked or blocked for various reasons;

C. Abnormal fuel nozzle: It can be caused by its own quality failure, or by various defects such as foreign body blockage, poor sealing and rubber ring aging.

D. abnormal rail pressure.

Electrical:

A, ignition coil open circuit, burning, poor conduction, etc.

B, ignition wire aging, leakage, resistance is wrong or abnormal.

C. the distributor is abnormal;

D. Abnormal nike blazer: Overtime service, incorrect resistance and advance payment, and unqualified self-quality may all lead to.

E. Do not perform the matching step after partially cleaning the oil circuit.

F, ECU control module failure.

Do not rule out other possibilities. The actual vehicle test results shall prevail. I hope my answer can help you, and I hope it will be adopted!