What is the abnormal sound of the cold car in Guangqi Honda Odyssey?

Abnormal noise includes abnormal engine noise, abnormal cab noise and abnormal chassis noise. The specific reason can be judged by abnormal sound.

The cause of the cold start [click] sound;

A, hydraulic tappet failure, may be improper use of oil, low oil pressure or hydraulic tappet itself wear, leading to air entering the hydraulic tappet, thus causing clicking sound.

B. The valve rocker arm is worn, resulting in excessive valve clearance, and it is too late to form oil film coverage when the cold car is started.

C. the throttle is dirty.

D, carbon canister solenoid valve working sound is normal, this is normal.

2. Reasons for cold start Kaka:

A, there was a click for half a minute, and then there was no click. This is generally the sound generated by the expansion of the three-way catalytic converter after heating, which is normal.

B there is a loud clicking sound during cold start, which is mainly caused by the timing system of the engine, such as the wear, elongation and looseness of the timing belt/chain or the loss of tensioning function of the chain tensioner.

C. if it is only available when the switch is turned on, it may be caused by friction.

3, cold start [knock] reason:

A, the fuel tank exhaust valve is not working properly.

B. the fluid in the reflux pump is impacted.

C. the fuel filter is partially blocked.