Ticking noise---exhaust leak- don't think so - Team Camaro Tech
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post #1 of 14 (permalink) Old Apr 20th, 15, 08:16 PM Thread Starter
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Ticking noise---exhaust leak- don't think so

I recently started driving my car again after many things restored- one thing we did was add a mild cam and lifter fit. So, when I start the car I can hear a bit of "puttering". When I rev it, it doesn't get much louder. Now when I put it in gear-reverse, or D, and start going the ticking gets much louder. I can be going down the street and move it to neutral and punch it, not loud. Back to drive and hit the gas loud. Does that sound more like a lifter tapping or an exhaust leak??
Wish I could record it and put it on here for you guys. Seems like it's been getting louder over the last couple of days.

Any ideas/thoughts?
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post #2 of 14 (permalink) Old Apr 21st, 15, 06:42 AM
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Re: Ticking noise---exhaust leak- don't think so

Very difficult to diagnose something like this via the internet. I would look at the lifters being you changed the cam/lifters. What pre-load did you use ?? Are all the rockers tight ?? A simple check, how's the oil ?? What weight are you using ?? Just some suggestions.

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post #3 of 14 (permalink) Old Apr 21st, 15, 07:23 AM
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Re: Ticking noise---exhaust leak- don't think so

If the tick follows the rpms of the motor I would suspect lifters need adjusted.

Easy trick to see if it's in the valve train is to use a long screwdriver and hold over valve covers and put the handle up to your ear, it will act as a stephescope and help find which side or valve is ticking.
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post #4 of 14 (permalink) Old Apr 21st, 15, 09:14 AM Thread Starter
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Re: Ticking noise---exhaust leak- don't think so

Quote:
Originally Posted by DT View Post
Very difficult to diagnose something like this via the internet. I would look at the lifters being you changed the cam/lifters. What pre-load did you use ?? Are all the rockers tight ?? A simple check, how's the oil ?? What weight are you using ?? Just some suggestions.
All good questions, but I have no idea. Oil is good and clean- 10W-40, and at the right level. Pre-load? No idea...rockers tight?...no idea. I had someone else do that as I am not familiar enough with engines.....yet. Thanks for the response however!
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post #5 of 14 (permalink) Old Apr 21st, 15, 10:16 AM
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Re: Ticking noise---exhaust leak- don't think so

Quote:
Originally Posted by Kev68ss View Post
I recently started driving my car again after many things restored- one thing we did was add a mild cam and lifter fit. So, when I start the car I can hear a bit of "puttering". When I rev it, it doesn't get much louder. Now when I put it in gear-reverse, or D, and start going the ticking gets much louder. I can be going down the street and move it to neutral and punch it, not loud. Back to drive and hit the gas loud. Does that sound more like a lifter tapping or an exhaust leak??
Wish I could record it and put it on here for you guys. Seems like it's been getting louder over the last couple of days.

Any ideas/thoughts?
Kevin, you need to remove the golf club (putter) from the muffler!
Seriously though, several things could contribute to that type of noise...Loose lifter, cracked exhaust manifold, spark plug seal ring missing, malfunctioning smog system (if it's still on the car), etc. You need to have a mechanic check it for you.

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post #6 of 14 (permalink) Old Apr 21st, 15, 10:29 AM
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Re: Ticking noise---exhaust leak- don't think so

Do you still have the heat riser on the right exhaust. If the sping is broke it could be bouncing open and closed.

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post #7 of 14 (permalink) Old Apr 21st, 15, 11:00 AM Thread Starter
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Re: Ticking noise---exhaust leak- don't think so

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Originally Posted by VetteFreak View Post
Kevin, you need to remove the golf club (putter) from the muffler!
Seriously though, several things could contribute to that type of noise...Loose lifter, cracked exhaust manifold, spark plug seal ring missing, malfunctioning smog system (if it's still on the car), etc. You need to have a mechanic check it for you.
After the way I putted last weekend I should have stuck it in the muffler and broke it in two!
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post #8 of 14 (permalink) Old Apr 21st, 15, 11:02 AM Thread Starter
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Re: Ticking noise---exhaust leak- don't think so

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Originally Posted by rogerh View Post
Do you still have the heat riser on the right exhaust. If the sping is broke it could be bouncing open and closed.

Roger
Mechanic time- have no idea what you are talking about- hey I can drive it fine, just not dx problems!
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post #9 of 14 (permalink) Old Apr 21st, 15, 11:32 AM
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Re: Ticking noise---exhaust leak- don't think so

could be just a bad header gasket too....

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post #10 of 14 (permalink) Old Apr 21st, 15, 01:02 PM
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Re: Ticking noise---exhaust leak- don't think so

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Originally Posted by Kev68ss View Post
Mechanic time- have no idea what you are talking about- hey I can drive it fine, just not dx problems!
This is a picture of the heat riser. It's attached to the right exhaust manifold. That weight on the side of the right side exhaust shouldn't be so loose you can easly move it with your fingers. That spring opens a exhaust damper when it gets hot. But if it rust and breaks the damper will bounce open and closed until it rust either open or closed.
The heat riser is part of the automatic choke system of the engine.

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post #11 of 14 (permalink) Old Apr 21st, 15, 01:39 PM
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Re: Ticking noise---exhaust leak- don't think so

Hey Kevin I sent you a PM with my phone number. I'm relatively close and would glad to take a look at it for you.

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post #12 of 14 (permalink) Old Apr 21st, 15, 01:40 PM
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Re: Ticking noise---exhaust leak- don't think so

Another thing you can check for is a loose spark plug.


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post #13 of 14 (permalink) Old Apr 21st, 15, 08:55 PM Thread Starter
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Re: Ticking noise---exhaust leak- don't think so

Well had a guy that knows cars come by and it is an exhaust leak- we found what looks like a tear in the corner of the exhaust manifold gasket. Thanks for all the help!
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post #14 of 14 (permalink) Old Apr 22nd, 15, 05:01 AM
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Re: Ticking noise---exhaust leak- don't think so

An old school trick of locating an exhaust leak is pour a 1/3 coffee cup of ATF or light engine oil into the carb bowl vent and look for smoke trail on the exhaust.

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