2004 330CI engine noise

[Autochthon]

Whats going on guys?! I have an automatic 04 330 ci about 130k miles i just bough, it been driving really nice for the past week... only problem now is that there is a rattling noise coming from the engine, you dont hear it at first when you start the car but after warm up and driving for 10 mins it becomes louder. No check engine on, no loss of power, no misfires, tranny seems good, just sounds kinda like a diesel, which isnt normal. It wasnt doing the noise when i first bought it just started to the other day. I recorded a video of it i can post on here once i find out how to

Im wondering if its something dangerous to drive on, or if anyone has delt with this before could throw in any advice would be much appriciated !

[Pelican Parts]

Hello and welcome to the forum! Since you're a new member, you'll have to post an outside link.

[Autochthon]

Thanks for the reply, sorry bud not really used to this, what is an outside link?

[Pelican Parts]

Meaning a link from youtube or another source since you can't upload a video here directly.

[Autochthon]

Right! Well since i cant post my video, this is as close as the noise can get https://m.youtube.com/watch?v=Lf8qARdQe7s

Please keep in mind, the car drives fine, has no problems just the engine sounds weird, somebody said could be DISA valve and if it break while driving could fuck up the whole engine but i did unplug the DISA valve and engine continues to raddle.

Thanks in advance!

[nonturbodan]

The DISA valve fails mechanically, unplugging won't have any effect. That may be irrelevant here though. Sounds quiet near the DISA and loudest on the exhaust side down by the head. The knocking also sounds rhythmic whereas a DISA kind of slaps around somewhat randomly.

Sound could be any number of things but it's likely internal to the engine or something driven by the engine like the AC compressor. Could have been a bad flywheel too if this was a manual transmission.

[Autochthon]

Yea its def rhythmic but again only hear it once its warmed up... do you think its something that should be taken care of immidietly or is it safe to drive like this, whats the worst that can happen this way?

I appriciate the feedback

[RobertDenali]

Post a video on YouTube and pm me the link.

[MIKYZZ4]

Yea its def rhythmic but again only hear it once its warmed up... do you think its something that should be taken care of immidietly or is it safe to drive like this, whats the worst that can happen this way?

I appriciate the feedback

Based on the symptoms I would have oil level along with oil pressure tested.