My car makes a ticking noise after being run and I shut off my car. Started happening after I had my Carsound Cat welded on. Also sounds like my Cat is fubar cause I can hear the internals rattling around inside of it.

Any idea why it ticks? Could it be due to the clogged up cat? Thanks in advance.


-Dan

 

i think it has something to do with the cat cooling off. My exhaust does that too where the resonator is, i think its pretty normal.

 

that's weird you said something about this.

my resonator rusted out and i had a new one welded in and my car ticks like a sun of a bish after i shut it down.

it sounds like a timebomb, but unfortunately it never detonates.

 

im pretty sure its just the metal cooling down that causes the ticking. started happening to me when i switched out exhausts

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AirWaveGT &raquo;</TD></TR><TR><TD CLASS="quote">im pretty sure its just the metal cooling down that causes the ticking. started happening to me when i switched out exhausts</TD></TR></TABLE>

That's all it is. It is just the metal expanding and contracting. It is not big deal.

 

What would cause the ticking though? Just trying to figure out if I had a leak because I did read somewhere on H-T that it might be a leak?

One more thing kinda off topic but not really actually. After I installed my Greddy 4-2-1 header, when I start my motor and rev to 3k rpm and let it fall to idle, it doesn't fall smoothly but pauses for a very slight moment near 2.5k rpm then 2k rpm again. Would this be due to a leak? Thanks guys for the input.

-Dan

 

when the exhaust heats up the metal expands. the ticking is the metal returning to its original shape

 

Its completely normal unless you can't pass smog

 

You could have a small hairline crack somewhere. I had this problem with this header on my civic. It turned out there was a crack in the header.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AirWaveGT &raquo;</TD></TR><TR><TD CLASS="quote">when the exhaust heats up the metal expands. the ticking is the metal returning to its original shape</TD></TR></TABLE>

 

The tick also happens while i drive or when the car is running. So possibly no leak? I do hear a little hissing when I mash it in third going down my street sometimes.


Dan

 

all normal.......my header ticks... my mom's pathfinder's exhaust piping ticks like no other

 

its normal, muffler shop told me after i got a custom catback, you probably didn't notice it while stock because the piping is smaller