The engine cover is probly not tightened down. It has to be removed to get to the oil filter on that car so probly an improper re-installation.
There are a number of causes for a rattling noise that occurs in a car. These include low oil and an engine that is faulty or going out.
No
no oil
A 2006 Kia Sedona will exhibit a growling noise from the engine if the serpentine belt is loose. It can slip against the pulleys and produce a persistent growling noise.
A rattling noise when starting the engine can be caused by several factors, including a loose or worn timing chain or belt, which can create a metallic sound. Additionally, insufficient oil pressure at startup might lead to noisy hydraulic lifters or valvetrain components. Other potential causes include loose engine mounts, a failing starter motor, or issues with the exhaust system. It's important to diagnose the source of the noise promptly to prevent further damage.
The guy in the trunk is still alive!!!
Possibly a loose heat shield or other component.
A rattling noise in the top engine of a VW Polo TDI can be caused by several factors, including worn or damaged timing belt components, loose or failing engine mounts, or issues with the valvetrain, such as worn lifters or camshaft. Additionally, low oil levels or poor oil quality can lead to insufficient lubrication, resulting in increased noise from engine components. It's advisable to have the vehicle inspected by a qualified mechanic to accurately diagnose and address the issue.
Vanos
A rattling heat shield typically should not trigger the check engine light, as it is more related to exhaust system noise than engine performance. However, if the rattling heat shield causes damage to other components or leads to a fault in the exhaust system, it might indirectly result in the engine light coming on. It's advisable to inspect the heat shield and any related issues to prevent further complications.
Check the cover on the catalytic converter or it could be the throw out bearing
A rattling noise during acceleration can be caused by several factors, including loose or damaged exhaust components, such as heat shields or mufflers, which may vibrate under the engine's torque. Additionally, worn engine mounts or suspension parts can also produce rattling sounds as they fail to properly support the engine's movement. Other potential causes might include loose bolts or fasteners in the drivetrain, or issues with the transmission. It's important to have the vehicle inspected to accurately diagnose and address the issue.