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Discussion Starter #1
I’m posting here for a bit more exposure. Here is a video of a rattle I keep hearing in my son’s truck. It sounds almost like it is coming from the front left of the engine if you are facing the truck. I do not hear it on startup. Could this be a timing chain issue? I put a mechanic’s stethoscope where the timing chain is and out sounds normal.
 

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Check the idler bearings. If no luck, start pulling belts and start her up. Pull power steering and ac belts first since runnin without those won't kill your battery.
 

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Discussion Starter #8
Got that right! I took off the right front tire to get better access to it and it’s definitely the alternator. Rattles like a paint can.
 
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