Q: engine rattling

asked by on November 30, 2017

So I have a 1991 Ford F-150 I want to get it back on the road its been sitting for twelve years once a month I would Turn it on a leave it Idling. But Earlier this year in January 2017, On January 14 2017 turned on the truck just fine no rattling noise but two weeks later on January 28,2017 after some cold days where some Ice would end up on top of the windshield turn on truck and this rattling noise can be heard from the engine but I can't figure out what it is I wanna say its the engine intake valve. I have provided to youtube videos so you can better diagnose the problem here they are. https://www.youtube.com/watch?v=WfL51YA0pZE https://www.youtube.com/watch?v=m-8a66mLHBA Oh and how long can engine oil last well how I only Idle this truck for about 10 minutes that oil hasn't been changed in twelve years.

My car has 64067 miles.
My car has a manual transmission.

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