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How do you know when have a burnt valve in your motor?

There are a few symptoms that can indicate a burnt valve in your motor:

1. Engine Misfire: Burnt valves can cause the engine to misfire, resulting in a rough idle and a lack of power.

2. Reduced Compression: Burnt valves can lead to a loss of compression in the affected cylinder, causing the engine to run less efficiently and have reduced power.

3. Loud Ticking Noise: A burnt valve can produce a loud ticking noise, particularly when the engine is cold.

4. Stalling: In severe cases, a burnt valve can cause the engine to stall or refuse to start altogether.

5. Check Engine Light: A burnt valve may also trigger the check engine light to illuminate on your dashboard.

If you suspect you have a burnt valve, it's important to have your vehicle inspected by a qualified mechanic who can diagnose and repair the issue accurately.