4L SOHC Timing Chain Noise | Ford Explorer - Ford Ranger Forums - Serious Explorations

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4L SOHC Timing Chain Noise

center_ice80

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Joined
July 24, 2013
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Year, Model & Trim Level
2003 xls
I own a 2003 Ford Explorer with a 4.0L SOHC V6 engine with approximately 109k miles. I've recently run into a major engine issue that may possibly be related to the timing chain cassettes. The engine will start, but makes a really loud noise that sounds a lot like rapid machine gun fire. Despite my best efforts to track down the source, I can't pinpoint exactly where the noise is coming from. Has anyone experience this? Does anyone have any suggestions?
 






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