Quote:
Originally Posted by A930Rocket
Thanks for the tips guys. It does have the M42 engine with 178k on the clock.
It's funny how it just started one day after owning it three years.
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So you have 318is! One of my favourite cars, I've literary spent days driving 318is on the track. M42 with more than 150k on the clock is more or less guaranteed to have valve clatter when cold. It's a wonder yours it lasted so long
Oil pump usually doesn't supply as much pressure on idle as it did new, tappets will have more clearance and there might be a piece of dirt that blocked the one-way valve preventing tappet to bleed out the oil. But it's all cosmetic really....it will probably run 100k more even if it clatters on startup.
Mine clattered all the time on idle when hot. Try to change the oil to thicker, if it doesn't help you can always buy a set of valve lifters off the Ebay. (but check chain tensioners and plastic chain rails first, if they are never changed they are pretty much worn down at 178k as well).