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Old 05-01-2012, 12:06 AM
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Ticking noise at start up/idle.

For the past two weeks or so my mother's 04 4.7 has been making a ticking noise once it starts up and has progressively gotten louder. Although once it has been idling for a while the ticking is still there but it is a lot less quieter than when it starts up. Does anybody have an idea on what the problem might be?
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Old 05-01-2012, 06:18 AM
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Re: Ticking noise at start up/idle.

Can be a hydraulic valve lash adjuster when the noise comes from the head. But first you have to find out where exactly the noise seems to be coming from. A mechanics stetoscope could help a lot finding the source.
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Old 05-01-2012, 07:29 AM
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Re: Ticking noise at start up/idle.

yeah it could be lifters, cracked exhaust manifold, loose exhaust manifold, missing bolt in the exhaust manifold, etc... there is a laundry list of things that could cause ticking.
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Old 05-01-2012, 05:15 PM
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Re: Ticking noise at start up/idle.

Quote:
Originally Posted by Antonio186 View Post
yeah it could be lifters, cracked exhaust manifold, loose exhaust manifold, missing bolt in the exhaust manifold, etc... there is a laundry list of things that could cause ticking.
Both great suggestions, This is a great guess.
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Old 05-01-2012, 05:26 PM
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Re: Ticking noise at start up/idle.

exhaust manifold
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Old 05-01-2012, 08:17 PM
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Re: Ticking noise at start up/idle.

Quote:
Originally Posted by Frango100 View Post
Can be a hydraulic valve lash adjuster when the noise comes from the head. But first you have to find out where exactly the noise seems to be coming from. A mechanics stetoscope could help a lot finding the source.
If it helps, I can hear the noise more from the bottom of the car than when I open the hood and try to locate the ticking.
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Old 05-01-2012, 08:23 PM
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Re: Ticking noise at start up/idle.

I will be going to the dealer on Thursday to have them check it out. If in fact it is the exhaust manifold any ideas on how much it would cost to replace?
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Old 05-01-2012, 08:34 PM
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Re: Ticking noise at start up/idle.

from a dealer way more than its worth. it may only being the manifold gasket but at any rate it would be cheaper to buy a used one from the junk yard and install it yourself or have a local mechanic do it. my guess it might be around 2-300 for the latter option.
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Old 05-15-2012, 01:42 PM
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Re: Ticking noise at start up/idle.

I am currently having this problem fixed in my 2006 4.7L V8. They had to replace my entire exhaust manifold, due to an exhaust leak etc. It was pretty corroded. Sounds like it's going to cost between $500-$600.
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Old 05-23-2012, 08:45 PM
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and headers on Cl or rockauto. prob 1/4 of that

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Old 10-17-2012, 01:17 PM
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Re: Ticking noise at start up/idle.

I have an 04 6 cylinder. My similar ticking came from the inside of one of the cat converters on the first pipe just off the manifold. "Front Y Pipe".
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