Reasons a radiator flush MIGHT help:
* Improved coolant flow: Over time, rust, scale, and other debris build up inside the cooling system. This restricts coolant flow, leading to overheating. A flush cleans out this debris, allowing for better circulation and heat dissipation. This *could* lead to smoother running, as overheating can cause the engine to run poorly or even damage components.
* Better heat transfer: Clean coolant transfers heat more efficiently. Improved heat transfer can prevent overheating and contribute to smoother engine operation, especially under heavy loads or in hot weather.
Reasons a radiator flush MIGHT NOT help:
* Underlying problem: Overheating and rough running can be caused by many things besides a clogged cooling system. These include:
* Faulty thermostat: A stuck-closed thermostat prevents coolant from circulating properly.
* Water pump failure: A failing water pump won't circulate coolant effectively.
* Head gasket leak: This allows combustion gases to enter the cooling system, causing pressure buildup and overheating. This also often leads to milky oil.
* Radiator leak: A leak in the radiator itself prevents the system from holding enough coolant.
* Cooling fan issues: A malfunctioning cooling fan won't adequately cool the radiator.
* Low coolant level: Simple lack of coolant will obviously cause overheating.
In short: A radiator flush is a relatively inexpensive and easy first step in troubleshooting overheating and rough running. However, if the problem persists after a flush, you'll need to diagnose the underlying cause. It's best to start with a thorough inspection of the entire cooling system, including the components listed above. Ignoring the root cause could lead to significant engine damage.
