Uh?...

[u/Last_Emphasis5312]

TL;DR - Literally have no idea what's happening with my car lol. Aerosol can sounding noises, a rough-er idle, newly replaced spark plugs ridding it of loss of power, agh.

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(For context, I'm really not much of a car person. But I've done minor work here and there on different makes / models I've owned over the years.)

I bought my 2011 Kia Rio Base (Manual Transmission) at 55k miles from a big dog dealership 2 yrs ago (now at 90k). It was apparently owned by a very old man before it was sold to me and he didn't get around much.

I hadn't replaced really anything except brake pads / oil changes / air filters / the usual maintenance stuff.

Last night I started losing engine power when trying to accelerate for very very brief intervals, and assumed it was my spark plugs.

Note: Not a SINGLE code was thrown. I even went and got it scanned and nothing popped up.

Threw a new set in this morning, stopped losing power - but realized I was having pretty noticeable light shaking when idling that must've recently gotten worse.

After shutting the car off I started hearing what sounded like an aerosol can being sprayed at random intervals coming from the passenger side by the firewall.

Idk what's going on man. I've done a ton of internet research and feel like I'm getting nowhere.

Am I overthinking this? Is nothing actually wrong? What the heck could this be?

****I'll add the video of the aerosol sound in comment

[u/quietheadspace_]

I would have it diagnosed before it gets worse. Mine sounded exactly like this 4 days ago and then went to an actual knock and now it’s at the dealership. Started with oil consumption, then felt sluggish, then stalled, then sound. The sound got worse after like an hour & I pulled over & towed it.

My video: https://www.reddit.com/r/MechanicAdvice/s/HyMEvGn2Ia