A clogged muffler can cause spark plug fouling, high engine idle, and indirectly contribute to overheating.
Clogged mufflers can cause spark plug fouling by restricting the exhaust flow, leading to incomplete combustion and potential carbon buildup on the spark plugs. This can result in misfires and poor engine performance.
Clogged mufflers may also lead to high engine idle as the engine struggles to expel exhaust gases efficiently, affecting the engine's idle speed and overall operation.
Overheating is not directly caused by a clogged muffler, but a severely restricted exhaust system can reduce cooling efficiency, indirectly contributing to overheating issues in the engine.
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