- #6 of 9
-
Re: strange engine noise [helpmeplease3]
by imidazol97
-
Feb 24, 2009 (8:52 am)
-
|
|
Replying to: helpmeplease3 (Feb 24, 2009 7:36 am)
One thing possible is an exhaust leak at the coupling between the exhaust manifold and the exhaust pipe at the back of the motor. There's a donut between the two that serves to seal them. The two move a little with respect to each other as the motor twists. The donut allows some movement while keeping a seal. I believe that went out on my 93 and had to be replaced. It can be heard under the engine compartment if you have the hood up and someone accelerates the motor slightly while holding the BRAKES on securely along with the emergency brake being set so the car doesn't move. You'll hear a snapping sound when the motor is putting out more exhaust gas under the load. It is a barking like sound like a motorcycle.
|
- #7 of 9
-
Re: strange engine noise [imidazol97]
by helpmeplease3
-
Feb 24, 2009 (9:29 am)
-
|
|
Replying to: imidazol97 (Feb 24, 2009 8:52 am)
Thank you so much for your help. So this would cause this sound when giving the car gas. Could it cause more damage if it not corrected soon.
|
- #8 of 9
-
Re: strange engine noise [helpmeplease3]
by stephen987
-
Feb 24, 2009 (9:45 am)
-
|
|
Replying to: helpmeplease3 (Feb 24, 2009 9:29 am)
I'd also have someone check the motor mounts.
|
- #9 of 9
-
Re: strange engine noise [helpmeplease3]
by imidazol97
-
Feb 24, 2009 (9:46 am)
-
|
|
Replying to: helpmeplease3 (Feb 24, 2009 9:29 am)
The hot gases escaping around the seal may, may heat up the wall between the passenger compartment and the engine if the leakage is toward that and is great enough. You can feel the leakage with you hand when you move it closer to the connection while motor is running--but it is hot back in there. It's a fairly easy repair for a good mechanic--two bolts that hold the two parts together. Put in the donut which is probably $15-25 at most and maybe less, and bolt it back together.
The donut is $7.95 at autozone. It's the exhaust flange seal, if I have my parts straight. You could also have leakage at a crack in the manifold that's bolted onto the motor if it's been damaged. Listening while the motor is running under load will let you locate the source of the sound while the hood's up and someone gently brakes and gives the motor some gas.
|
![[F]](http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com/media/townhall/webxicons/site.gif){kind=small}
Forums
Sedans 
