Ticking noise

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May 10, 2004 | 10:59 PM

FD2BLK

Thread Starter

Safety Car

Joined: Dec 2002

Posts: 3,655

Likes: 24

From: Charleston SC

Ticking noise

I have a ticking noise at 2000 RPM when driving. I think it is an exhaust leak but opinions are welcome. It ticks between 2000-3000 RPMs once the car warms up. If I let the car sit for 10-15 min. then start it again the noise will get very faint for a while (I suspect till the pipes heat up). when I do the turn the car off trick the oil temp is still at 215 and the water temp is still 200 (normal) when I restart it so I don't think it is a motor problem because the motor never gets a chance to cool down. any opinions on this one??? I will get under the car this weekend and see who's who in the zoo but would like a few ideas other then my own, don't want to here bad news, conclusions. The motor is quiet as a mouse, well a mouse with Magna Flow's at idel and below 2000 and I don't seem to hear it above 3000. It also seems to be more with light pedal rather then under heavy load.

May 10, 2004 | 11:31 PM

Dominic Sorresso

Le Mans Master

Joined: Sep 2000

Posts: 6,303

Likes: 714

From: Bartlett IL

Re: Ticking noise (84LT1)

84LT1,

Let me know about this one because what you describe is exactly the symptoms I am experiencing right now. I suspect its an exhaust leak. I just swapped cams and had a ticking sound from the passenger side. I had a loose rocker arm. Fixed that and now a slight ticking sound from the drivers side. I have TPIS headers that I put on about 2.5 years ago.

May 11, 2004 | 01:14 AM

FD2BLK

Thread Starter

Safety Car

Joined: Dec 2002

Posts: 3,655

Likes: 24

From: Charleston SC

Re: Ticking noise (Dominic Sorresso)

Dominic,
I will keep you updated and may pull the valve covers tomorrow if I have the time (Doubt it).

May 11, 2004 | 11:03 AM

Unriced

Pro

Joined: Oct 2002

Posts: 586

Likes: 0

From: Schmuckville SA

Re: Ticking noise (FD2BLK)

I have an 85 and I'll tell you what i ran into last week....
Car was makng ticking and banging noises to the point where I
was emabarrased to drive it. Anyhow, I had two rusted mufflers
which I promptly replaced. All the noise is gone now. Orginally,
I thought my cat was crappin out but turns out was ok. I even
misconstrued the noises for possible engine noises/issues.
Bottom line, when it comes to exhaust issues, noise travels
from one end to the other. Can play tricks on you... I would say
something is loose or worn out. Could be a pipe or a hanger..

Good Luck

May 11, 2004 | 06:28 PM

TomH91

Racer

Joined: Aug 2001

Posts: 476

Likes: 45

From: St. Louis

Re: Ticking noise (Unriced)

Bad cat(s) or precat(s) - didn't check what year you drive before I posted (DOH). The substrate has broken up is rattling around in the exhaust flow at low rpms. Common on L98s, but can happen on LT1 as well.

May 11, 2004 | 06:37 PM

JasonL

Melting Slicks

Joined: Apr 2000

Posts: 3,198

Likes: 2

From: Northern CA

Re: Ticking noise (FD2BLK)

I had a ticking noise when warm and a Vette mechanic put his stethoscope on the following items:

fuel injectors (apparently common on LT1s)
exhaust manifolds
valve covers
alternator

He said lifters can tick as well. Though in my case it was just the injectors.