Fort Madison Auto Repair

A timing chain is built to last a long time, so many drivers don't think about it until the engine starts making an unfamiliar noise. When the chain, tensioner, or guides begin to wear, the first warning is often a rattle that was not there before. That sound deserves attention because the timing chain keeps the crankshaft and camshafts synchronized. If the system becomes loose enough for the chain to jump timing, the engine can stop running correctly and, on some engines, serious internal damage can follow. Listen for a Rattle During Startup A brief metallic rattle immediately after starting the engine is one of the more recognizable signs of a timing chain system beginning to wear. It may be loudest after the vehicle has been parked for several hours and become quieter once oil pressure builds. Many engines use oil pressure to keep the chain tight. A worn tensioner can allow extra slack during startup before it fully extends. Worn chain guides can make the no ... read more