| Author |
Message |
    
Dan OBrien
| | Posted on Wednesday, February 27, 2002 - 06:04 pm: | 
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My 95 Disco with about 140,000 miles now has a tapping noise in the engine. Sounds like valves. Early on I had the cam button modification. Guess this is something new? |
Norm
| | Posted on Wednesday, February 27, 2002 - 10:37 pm: |
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With that many miles, it could be anything. You might get yourself a mechanic's stethescope to try to narrow it down. If it's in the valve gear, you can take the valve covers off and run the motor and to find the problem. |
Neal Glessner (Nealg)
| | Posted on Thursday, February 28, 2002 - 12:11 am: |
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what is the cam button modification |
Bill Bettridge (Billb)
| | Posted on Thursday, February 28, 2002 - 08:42 am: |
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Neal - on the 3.9's the cam will "walk" back and forth in it's bore. Makes a VERY distinctive sound and is unlike any other valve tap. Really noticeable at idle. Doesn't really hurt anything, just annoying.
You can install a cam button which is just a spacer that prevents the camshaft from moving back and forth.
Bill |
Rob
| | Posted on Thursday, February 28, 2002 - 09:57 am: |
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I have the same tapping on my 96. I would love to fix it. you can run the motor with the valve covers off? |
Dan OBrien
| | Posted on Thursday, February 28, 2002 - 10:37 am: |
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The Cam button on my 95 Disco was replaced under warranty at the time. I believe it was service bulletin TEC120295 FEB 95 Engine - Camshaft Knock. See this link http://www.alldata.com/TSB/68/95680602.html for 3.9L service bulletins. |
Neal Glessner (Nealg)
| | Posted on Thursday, February 28, 2002 - 09:33 pm: |
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Sorry to keep asking stupid questions BUT.... How do recalls work? If I spot a recall, does it matter how many miles I have on my truck? Can recalls expire? |
Ron Ward (Ronward)
| | Posted on Thursday, February 28, 2002 - 10:00 pm: |
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Cam button is like a $600 job at the dealer.
Ron W |
Anonymous
| | Posted on Thursday, February 28, 2002 - 11:36 pm: |
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Where does the spacer go? On the back of the cam? |
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