Car Losing Power? Here's Why and What to Do

Experiencing a sudden dip in your car's power, even after regular maintenance? This is a common issue, especially in vehicles older than five years or those frequently used. One of the primary culprits is a decrease in engine compression.

Understanding Engine Compression

Engine compression refers to the volume change in the engine cylinder when the piston moves from the top to the bottom of its stroke. This ratio, which varies depending on the engine, is crucial for optimal engine performance. When compression drops, your car loses power and efficiency.

Common Reasons for Decreased Engine Compression

Several factors can contribute to a decrease in engine compression, including:

• Worn Piston Rings: Over time, piston rings can wear down or get stuck, leading to compression loss. This is more prevalent in older cars.
• Valve Problems: Stuck or poorly sealing valves can cause compression leaks, impacting power. This could be due to dirt, carbon buildup, or worn valve seals.
• Leaking Head Gasket: A damaged head gasket creates a pathway for compression to escape, affecting engine performance.
• Damaged Cylinder Head: A cracked or warped cylinder head leads to compression leaks, potentially caused by overheating or other issues.
• Cylinder Bore Wear: As your engine ages, the cylinder walls wear down, creating gaps that allow compression to escape.

Taking Action When Your Car Loses Power

If you notice a significant drop in your car's performance, it's crucial to seek professional help. A mechanic can diagnose the specific problem and recommend the appropriate solution to restore your car's power and efficiency. Ignoring this issue can lead to further engine damage and costly repairs.