A timing chain synchronizes the rotation of the crankshaft and camshaft(s) ensuring proper timing and allows the engine's valves to open and close during each cylinder's firing. The chain is located inside of the engine, every time you use the engine, the timing chain is in use.
How Do I Know If My Timing Chain Needs Replacing?
The timing chain normally needs to be replaced between 80,000 and 120,000 miles unless there is a specific problem. Issues with the chain are common in higher mileage vehicles. If driving an older vehicle, or one with close to 100,000 miles, it is recommended to look for symptoms of the timing chain going bad or failing.
Signs of a Bad Timing Chain Include:
-Later model VVT applications will generate engine codes and check engine lights prior to engine rattle
-Older, pre-VVT applications will generate engine rattle.
How To Change A Timing Chain On 2004-2008 Ford F150 5.4L
The timing chain is verified as defective or broken. The vehicle is lifted and supported on jack stands. The coolant and oil is drained
Removing the Drive Belt Components. The water pump, belt and accessories are removed to gain access for the timing chain. Oil pan is lowered.
The timing cover is removed. Lube the gear before installing the new 5.4 timing chain. Place the new ford 5.4 timing chain replacement onto the gears while aligning with the marks. Tighten the chain according to your car manual's specifications.
The timing cover and oil pan is reinstalled. The water pump, belt and accessories are re-installed as required. The engine oil and coolant are filled. The vehicle is removed from the jack stands.
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