Quote:
Originally Posted by fkheath
Just a guess -- sound a bit like valve noise. Caused by the hydraulic valve lifters bleeding down after a long sit. No harm done if it goes away soon after the oil pressure builds up.
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Yeah, in the video it sounds like a lifter bleeding down.
Next time it does it, turn the car off immediately, wait a couple seconds and restart. If it doesn't happen again, it's probably a bled down lifter.
If it DOES happen again, and it hasn't been this cold in a while, there's a chance that because of the cold, that a heat shield or something that's now JUST close enough to make contact. Metal moves as a function of temperature. It's possible that there due to extreme cold it's moved enough to make contact. My pickup truck did this.
