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Discussion Starter · #1 ·
I've got a problem and all the searching I've done hasn't turned up any results. First off my truck runs great, but when you twist off the oil tube filler cap you can hear a serious rattle kind of like a ball peen hammer on iron consistent with rpm of the engine. Put the cap back on and you can't hear it anymore. I'm getting ready to pull the cover off the front of the engine and have a look I need to check the KDP anyhow. I've got a 500 mile trip home next week before I can take a look at it I just hope it's not something that's going to blow up before I get home.
 
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