Funny Noise From Throttlebody [Archive] - SR20 Forum

: Funny Noise From Throttlebody


Synx
05-26-2002, 08:14 PM
Okay guys, i just installed some JDM cams and bumped up my timing to 19deg, and i had to adjust that idle screw big time to get my idle back up to around 850rpm. Anways whenever i stand near the intake(open air box mod) i hear a little rasp coming from the engine, if i move anywhere else around the engine bay i dont hear it. And when i turn the car off you can really hear it even if your inside the car. Its a smooth single cough/sigh/rasp. Sounds kida like if you breath out really slow with your mouth all open and makeing a rasping sound.
Anways at first i thought i was maby the cams rubbing on something but i had my dad turn off the car and i watched the crank pully and the sound still comes for maby a second or so after the crank has stoped turning. So i dont think its something over torqued on the cams.
The idle is also a little rough but i assume that is from the more aggressive cams.
Im really starting to worrie about the car now, i have taken it on two drives since just to make sure it ran okay, and it ran just fine. So what could it be!?!?!

Synx
05-26-2002, 11:11 PM
Comeon guys and girls, im really at a loss here. Could it be rocker arms? But i ran fairly hard today and it ran just dandy. I hope you are all out on trip's for memorial day!

Matt
05-26-2002, 11:15 PM
Ok well I'm just taking a shot in the dark on this one. My car makes a hissing sound from the intake. It's nothing bad, just the nature of more air flowing, and you being able to hear it.