What's the strange noise of Odyssey's cold car?

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

The reason why the cold car began to rattle;

A, hydraulic tappet failure, this may be improper use of oil, oil pressure is too low or the hydraulic tappet itself is worn, causing air to enter the hydraulic tappet, thus causing clicking sound.

B, valve rocker arm wear, resulting in excessive valve clearance, cold car start-up too late to form oil film coverage.

C, the throttle is dirty.

D, the voice of the carbon canister solenoid valve work, this is normal.

2. Reasons for the clicking sound when the cold car starts:

A, there was a click in half a minute, and then there was no click. This is generally the sound made by the expansion of the three-way catalyst after heating. This is normal.

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

C. If the air conditioner is only turned on, it may be caused by the friction of the air conditioner belt.

3, cold car start knocking reason:

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

Internal fluid impact of reflux pump.

C. the internal part of the fuel filter is blocked.

(Photo/Text/Photo: Qi) @20 19