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Old 10-13-2014, 10:44 PM   #1
Butler_20
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help! truck making a ticking sound.

Hello my 72 chevy pickup is making a ticking sound while driving. The faster I go the faster the ticking sounds. When I'm parked I can barely hear it, even while I rev the motor. I think it's coming from my transmission which is a th350. Any suggestions would help, thanks.
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Old 10-13-2014, 11:44 PM   #2
davischevy
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Re: help! truck making a ticking sound.

Check U joints in your drive shaft.
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Old 10-13-2014, 11:52 PM   #3
Stocker
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Re: help! truck making a ticking sound.

Welcome to the board!

If it's ticking when parked, it won't be u-joints. I'll guess either a collapsed hydraulic lifter, or an exhaust leak at or near the manifold. Could be transmission, I don't know. Another possibility is cracked flex plate. They'll sometimes crack between the bolt holes.
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Old 10-14-2014, 12:36 AM   #4
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Re: help! truck making a ticking sound.

could even be a rock in the tire
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Old 10-14-2014, 01:02 AM   #5
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Re: help! truck making a ticking sound.

Quote:
Originally Posted by IIGW View Post
could even be a rock in the tire
But not if he hears it when parked...
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Old 10-14-2014, 01:13 AM   #6
Butler_20
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Re: help! truck making a ticking sound.

Thanks guys, I'll definitely check and keep you posted!
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Old 10-14-2014, 02:45 AM   #7
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Re: help! truck making a ticking sound.

I was also thinking valves, lifters, or exhaust leak.
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Old 10-14-2014, 09:27 AM   #8
engineer_gregh
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Re: help! truck making a ticking sound.

Years ago I had a 350 that ticked. I poured in a bottle of Hyperlube and the tick went away. Its only about $12 bucks to find out. If it does fix the problem then you know its valve train related.
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Old 10-14-2014, 01:30 PM   #9
hamjet
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Re: help! truck making a ticking sound.

Sounds like an exhaust leak. It sounds louder while driving because your working the engine. does it go away when you stop accelerating and coast???
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Old 10-14-2014, 02:04 PM   #10
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Re: help! truck making a ticking sound.

Reach up under the dash and make sure your speedo cable is tight. Do the same thing for the connection at the transmission. Optional - disconnect cable from speedometer, pull through firewall to engine bay, and add some lubrication.

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Old 04-02-2015, 10:38 PM   #11
Butler_20
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Re: help! truck making a ticking sound.

I believe it was an exhaust leak. When I unmounted the driver side exhaust from the header I found that the gasket was broken. I've since then, had hooker headers and flowmaster 44's installed. Gettin' her ready for summer. (*o*)/

Thanks guys, sorry about the lateness of this post. I've been busy with school and work.
Cheers!
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