Engine:
* Oil Consumption: Known for burning oil, especially as they age. This can be due to worn piston rings, valve stem seals, or other issues.
* Head Gasket Issues: Prone to head gasket leaks, especially after high mileage or overheating.
* Cooling System: The B20 engine has a relatively small cooling system, making it susceptible to overheating if not properly maintained.
* Timing Chain Issues: The timing chain can stretch over time, requiring replacement.
* Carburetion: Older B20 engines with carburetors can experience fuel delivery issues, particularly when cold.
Other:
* Rust: Being a Swedish product, Volvo B20 engines are susceptible to rust, especially if not stored in a dry environment.
* Parts Availability: While common in Europe, parts availability can be an issue in some markets.
Specific issues related to various B20 variants:
* B20A (8 Valve): Prone to overheating due to its smaller cooling system.
* B20B (8 Valve): May have issues with the distributor cap and rotor arm.
* B20E (16 Valve): The head gasket issues are more common in this variant.
* B21 (Turbocharged): While a solid engine, turbos can develop issues and require maintenance.
Overall:
Despite these potential issues, the Volvo B20 is a reliable engine that can last for many years with proper care.
Things to consider:
* Regular maintenance: Oil changes, coolant checks, and general inspections are crucial to prevent issues.
* Good quality parts: Using high-quality parts can extend the engine's life.
* Know the history: If buying a used car with a B20 engine, check its maintenance history to identify any potential problems.
It's important to remember that these are common issues, and not all B20 engines will experience them. With proper care and maintenance, the B20 engine can provide years of reliable service.
