5fse Engine Running loud Options

[kamax]

Hey I was wondering what's the best way to diagnosis why my engine is making the noise that it makes. It's really loud like something is leaking. It's loud when idle and louder when revved. What's the common cause of this? I'll post video of the sound when I get the chance.

Thanks.

View My Video

for video

when idle it's loud... is it exhaust leak or something else? what do you guys think

This post has been edited by kamax: Mar 9, 2011 - 6:08 AM

[97Supra]

The hissing sound is your idle air control valve, the clunk or girgle that is barely audible upon deceleration could be many things, the sound quality is really terrible. Could be a misfire, could be an exhaust leak causing popping sounds, could be worn exhaust hanger allowing the exhaust to bang into the underside of the vehicle when torque is applied.

If you want to find an exhaust leak, when the car is cool / cold start it up, and cover your hand with a rag or towell and cover the tail pipe (with force don't let air escape for a few seconds) if there is a breach anywhere you will hear exhaust escaping from it. visibly, you'll be able to see soot around where the hole / crack in the exhaust is usually.

Do not try this when the car has been running for a while or hot, you will get burned. Please exercise caution.

This post has been edited by 97Supra: Mar 9, 2011 - 3:18 PM