What Causes the Sizzling Sound When Starting a Car?

[AlainaLynn]

Here are the reasons for the sizzling sound when starting a car: 1. Loose engine mount bolts causing improper installation of engine supports; 2. Loose or aged belts. Generally, you can attempt to fix this issue yourself. (1) For loose engine mount bolts, you can locate and tighten the specific screws yourself; (2) For loose or aged belts, you can replace them with a new one. 3. If the car hasn't been started for a while, the oil will return to the oil pan, resulting in less oil in the valve chamber. The lack of oil for sealing and lubrication in the valve chamber causes the sizzling sound heard from the bottom of the car when it is first started.