loud tapping
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Freshman User
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loud tapping
Hey guys,
I have a newly rebult 390, with about 400 miles on it, When you start the truck there is no noice but when it gets warm, a tapping noice starts! Any ideas what this could be? I do have a header leak but this is not that! Sometimes it wont even make it, but most of the time when engine is warm it will make the noice?
my only toughts are pushrods to long, or stuck lifter, But I am unsure what both of those would sound like?
Still runs fine...
Thanks
I have a newly rebult 390, with about 400 miles on it, When you start the truck there is no noice but when it gets warm, a tapping noice starts! Any ideas what this could be? I do have a header leak but this is not that! Sometimes it wont even make it, but most of the time when engine is warm it will make the noice?
my only toughts are pushrods to long, or stuck lifter, But I am unsure what both of those would sound like?
Still runs fine...
Thanks
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Hey guys,
I have a newly rebult 390, with about 400 miles on it, When you start the truck there is no noice but when it gets warm, a tapping noice starts! Any ideas what this could be? I do have a header leak but this is not that! Sometimes it wont even make it, but most of the time when engine is warm it will make the noice?
my only toughts are pushrods to long, or stuck lifter, But I am unsure what both of those would sound like?
Still runs fine...
Thanks
I have a newly rebult 390, with about 400 miles on it, When you start the truck there is no noice but when it gets warm, a tapping noice starts! Any ideas what this could be? I do have a header leak but this is not that! Sometimes it wont even make it, but most of the time when engine is warm it will make the noice?
my only toughts are pushrods to long, or stuck lifter, But I am unsure what both of those would sound like?
Still runs fine...
Thanks
Thread Starter
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Freshman User
Joined: Mar 2010
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yea, here is a video so you can hear what im talking about!
its only when the trucks warms up and the warmer it gets the louder!
<embed width="600" height="361" type="application/x-shockwave-flash" allowFullscreen="true" allowNetworking="all" wmode="transparent" src="http://static.photobucket.com/player.swf?file=http://vid244.photobucket.com/albums/gg16/sexyspeer/MVI_1295.flv">
its only when the trucks warms up and the warmer it gets the louder!
<embed width="600" height="361" type="application/x-shockwave-flash" allowFullscreen="true" allowNetworking="all" wmode="transparent" src="http://static.photobucket.com/player.swf?file=http://vid244.photobucket.com/albums/gg16/sexyspeer/MVI_1295.flv">
Junior User
Joined: Apr 2010
Posts: 56
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From: Los Alamos, New Mexico
Agreed. You have something in the top end making the noise. If you get yourself a stick and place it on different places on the valve cover you can narrow your search down. Use it like a poor mans stethoscope. This will at least get you to the right cylinder. Good luck.
LT.
LT.
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Joined: Jul 2010
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expedition failure
Ticking valves progressed to a noticably...something's getting ready to happen sound, so I pulled over. In doing so she lost all oil pressure. So... by the time(<60 seconds) I rolled to a stop, truck stopped running and upon attempted restart, observation said she had a seizure.
2.5 hours prior I was gifted from my fiance this truck (1999 expedition 5.4L)
125000 miles old.
'Fis was you, what'd you think I should do? ((feed me some good beta/advice)(Tell me what to did or at least whatchyodeww if this was you)).
Might seem easy stoopid for problem solved, I won't take offense to what seems obvious to advisor(you)I'm asking for ideas please.
Apreciated are your replies..., signed, Durtbahl
2.5 hours prior I was gifted from my fiance this truck (1999 expedition 5.4L)
125000 miles old.
'Fis was you, what'd you think I should do? ((feed me some good beta/advice)(Tell me what to did or at least whatchyodeww if this was you)).
Might seem easy stoopid for problem solved, I won't take offense to what seems obvious to advisor(you)I'm asking for ideas please.
Apreciated are your replies..., signed, Durtbahl
Last edited by durtbahl; Jul 2, 2010 at 05:09 AM. Reason: N.O.Y.D.B.
Senior User
Joined: Jul 2001
Posts: 227
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From: Bridger Mtns, Montana
That's what my engine sounded like. Pop the valve cover and see which lifter isn't moving the full stroke. Mine ended up being a rounded off lifter and cam lobe.
See this thread for pics/explanation of failure:
https://www.ford-trucks.com/forums/9...is-before.html
See this thread for pics/explanation of failure:
https://www.ford-trucks.com/forums/9...is-before.html
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From: Bridger Mtns, Montana
Pop the valve covers off. Start up the engine and watch the rocker movement. With the noise that your engine is making, I would think it would be pretty obvious which one(s) aren't moving their full stroke.
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Looked at the lifter and it seems to be good, no groves, not rounded... Im assuming you test them by pushing on them and if they collapse or theres any play its dead? Or is there a different way to test them?
Also would this lifter cause the rockerarm galley not to get oil?
Also would this lifter cause the rockerarm galley not to get oil?
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