Ehxaust Leak,How to to find it ? HELP

[racer]

Hey guys,Last week I drove out of a very high driveway and on the way when the front tires droped the bottom of the car hit the ground
So I went under the car and i saw that I hit my DOWNPIPE.There is a little bent on the pipe but no cracks or hole.Now,could a little bent on the downpipe cause bad ehxaust flow? the bent is just a little.
Onother thing is ,Im not sure if the hit didnt cause some kinda space between the ehxaust manifold and the head because the downpipe is not conected to the block but only to the manifold.Im scare that this might have cause some space or little bent somewhere.
The thing is that there is noting obvious so i can not tell just by looking if there is an exhaust leak somewhere.How could I check that for sure????

 

[ericismyname]

try listening and feeling for leaks at the points where they would be.

 

[qwall]

if you have exhaust leak at the manifold you'd know it and hear it. I don't hink the dent will be a problem as long as it isn't too big and cracked the pipe.

 

[Defiant]

Turn off the motor and hook up an air supply to the tailpipe.

 

[spaceball]

put your car in a big bucket of water and look for the bubbles

 

[spaceball]

if the manifold has a leak it will make a ticking sound similar to noisy lifters

 

[racer]

tx spaceball,I tryed ur method and I worked perfect,I found no leaks.Tx again.