dk3Jdefje1X

i just changed my oil today, put Mobil 1 5w-30 fully synthetic in. Put 5 quarts exactly, a new k&n oil filter. I drive it around after and it seems good. Once I'm leaving my friends house, where I do the oil change, I'm going down the road and I hear something under my car, it sounds like I'm dragging some of the plastics, like they fell off and they're dragging. Doing a pull I hear nothing wrong, idling sounds perfect, but when I go from 2500-4000 Rpms I hear that noise. I checked the oil and it's fine, but I'm gonna let it sit over night then check it again and drive it. Never heard this before. I looke
d under the car and nothing was loose or hanging. Not sure what it is. Any help? I did out sea foam in the gas tank, I heard that may cause problems with noises but only the gas tank, I heard that the noises come from putting it in the engine. Not sure

jakgal04

iTrader: (1)

First things first, if you think something is wrong, the last thing you wanna do is go WOT. You never know what can be wrong lol

If I had to guess, I would say its either the fender liner rubbing the tire. (Even if its not rubbing at idle it can be at cruising speeds, so wiggle it a bit and see if its loose) Other than that if you have the factory under tray on, make sure its secure. If the front of it isn't fully attached and it get pulled down with the wind it'll scrape.

dk3Jdefje1X

my car seems to be running better now that I put the sea foam/new oil in it. I think it's the under tray so im going to jack it up today and see.

Olegator

Just want to note that if you are putting sea foam in the fuel tank, you are effectively puttion it in the engine. If you mixed it in accordance with the instructions, there shouldn't be a problem.
It's hard to see anything under the car as everything is covered with plastics... you might need to get under and inspect closely...

roidz3

I would say double check the under tray for anything loose I would hear a similar noise getting up to speeds and it turned out to be a couple small pieces of the under tray..

.M.

Weird that you only hear it from 2500-4000 rpms. Did you find the problem? Like posted above... I'd start with checking all the plastics.

dk3Jdefje1X

im an idiot, one of the plastics came loose. It was right behind my front lip so I couldn't see it because I looked at the car from the side. Stupid me

dk3Jdefje1X

i did it right, and my knock count is 1-0 now. It use to jump to 4. The tank of gas was used and refilled.

.M.

No big deal. Good thing it was a small/easy fix