may as well start a new thread on this.
i have a noise coming from the front of the valve cover that sounds exactly like a timing chain slapping the valve cover. it's the slap slap sound is consistent with the rpm's, and it never goes away. so far, i've changed both chain tensioners. the vanos unit is original (204k miles), and is still working. i don't think it's the vanos, though, because it doesn't sound like the marbles-in-a-tin-can sound i hear on those youtube videos. it's been going on for 10s of thousands of miles. as far as i can tell, it's just typical noise, but i'd just rather it go away.
so this is my question: is it the timing chain getting too old? or is it a less common noise from the vanos that the good ol' doctor can fix? thanks
i have a noise coming from the front of the valve cover that sounds exactly like a timing chain slapping the valve cover. it's the slap slap sound is consistent with the rpm's, and it never goes away. so far, i've changed both chain tensioners. the vanos unit is original (204k miles), and is still working. i don't think it's the vanos, though, because it doesn't sound like the marbles-in-a-tin-can sound i hear on those youtube videos. it's been going on for 10s of thousands of miles. as far as i can tell, it's just typical noise, but i'd just rather it go away.
so this is my question: is it the timing chain getting too old? or is it a less common noise from the vanos that the good ol' doctor can fix? thanks