Hello all, new here. I recently got a 2002 durango 4.7L with 40k miles on it. She runs like a champ. I am doing mods...intake etc...:banana2: and noticed that I have a tapping coming from my passenger side valve train. I have a mechanics sonarscope and use it and towards the back of the valve cover I have tapping. It is worse on cold startups and dies down with warming and more oil getting to it, but still taps and is not the injectors. This was not happening when I purchased the durango. It did however happen after I flushed the engine with some castrol gtx. I put the oil in, ran 500 miles and changed it to penzoil plat both 10W30. It has a K&N filter and for the time being I also put in a K&N drop in. Now the thing that I was wondering, can it be ignored? If not should I pull the valve cover? If I do is there anything I need to know? I know it has a SOHC. I myself have never dug into this type of engine. With the SOHC is it hydrolic, does it have lash's that may need tightened? Any tips on what to look for if I have to pull the cover would be much appreciated:huh:. TIA
Some community questions
flyboy121785
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Hello all, new here. I recently got a 2002 durango 4.7L with 40k miles on it. She runs like a champ. I am doing mods...intake etc...:banana2: and noticed that I have a tapping coming from my passenger side valve train. I have a mechanics sonarscope and use it and towards the back of the valve cover I have tapping. It is worse on cold startups and dies down with warming and more oil getting to it, but still taps and is not the injectors. This was not happening when I purchased the durango. It did however happen after I flushed the engine with some castrol gtx. I put the oil in, ran 500 miles and changed it to penzoil plat both 10W30. It has a K&N filter and for the time being I also put in a K&N drop in. Now the thing that I was wondering, can it be ignored? If not should I pull the valve cover? If I do is there anything I need to know? I know it has a SOHC. I myself have never dug into this type of engine. With the SOHC is it hydrolic, does it have lash's that may need tightened? Any tips on what to look for if I have to pull the cover would be much appreciated:huh:. TIA
The 4.7 is known to break exhaust manifold studs. This will cause a tick when cold and gradually goes away as the manifold heats up, expanding and closing the gap. I would make sure that none of your studs are broken (especially in the back) before your open the covers. Fairly common 4.7 issue.
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Cool, I'll check that out thanks. I also managed to find a cutaway of the valve train on the 4.7. I decided to check it out again today with the sonarscope because I had a slight ear infection the last time I did it. Now both valve trains sound the same...the slight vibration of the valves moving and oil pumping. I moved onto my PS pump because thats going bad. No tick there. I then moved to the AC compressor. Sure enough I'm hearing the ticking coming from inside there. The other day I started the AC up and it sounded like I caught a cat in my belt. It works fine but I think the bearings are going bad.
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My truck does the same 'ticking' when I first start it up. I installed new headers/gaskets and the noise is still there, so I am fairly sure it has something to do with oil drain back as previously mentioned. It has been making the noise since I bought the truck with 6k miles on it, it now has 99k and runs better than ever so I'm not to worried about it.
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Mine does that too and it is the lash adjusters not exhaust manifold studs. The only way that may possibly stop the ticking is to replace the lash adjusters. There is no lash adjustment. You can find many ways on here to do it by doing a search on lash adjusters or camshaft replacement.
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