Any idea what this noise is?

[CitizenKane]

Only happens on cold starts:

https://youtu.be/98ALlAw-2Tc

It's a 318Ci N46.

[ian.j]

try changing the oil and filter.

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[CitizenKane]

Done a couple of months ago!

[spike]

Sounds like a timing chain tensioner.

[CitizenKane]

Interesting. From doing some research on other forums that seems to be a common suggestion.

Any idea how much that might cost to fix? I will seek quotes of course but it would be good to have some frame of reference.

The other thing I've noticed is that the car is making a sort of metallic raspy noise between around 800-1000rpm, e.g. when taking off or reversing at low speeds. Not sure if it's related?

[nige]

Interesting. From doing some research on other forums that seems to be a common suggestion.

Any idea how much that might cost to fix? I will seek quotes of course but it would be good to have some frame of reference.

The other thing I've noticed is that the car is making a sort of metallic raspy noise between around 800-1000rpm, e.g. when taking off or reversing at low speeds. Not sure if it's related?

You know that phrase throwing good money after bad.......how many thousands are you into your 3 series now? Would you be willing to put another €1k into it?

[Peter-E36]

I hate to say it Mr Kane, but I think you do need to cut your losses at some point. Sounds like your 318 is more expensive to maintain than an M3.

Just buy the M3 already! Life’s too short

[spike]

All cars are money pits,just get a price for work to be done, if you like the car keep it,

[318 iS Cosmos]

Exactly, you said you weren't in a position to buy a M3 yet so just spend a bit more on this car to tide you over.

Crude but easy way to check the chain. Get a small hook (even the top of a clothes hanger) and open the oil filler cap. Get the hook under the timing chain and try to move it upwards. If there is noticeable slack, you need a new chain.

[CitizenKane]

Exactly, you said you weren't in a position to buy a M3 yet so just spend a bit more on this car to tide you over.

Crude but easy way to check the chain. Get a small hook (even the top of a clothes hanger) and open the oil filler cap. Get the hook under the timing chain and try to move it upwards. If there is noticeable slack, you need a new chain.

Thanks mate, I'll give that a go.