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Knock only on initial start up

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Old 11-08-2021, 10:54 AM
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Default Knock only on initial start up(SOLVED)

this issue has been solved and was found to be a rocker thrown. Heads were pulled and complete replacement of rockers and lifters along with chiming chain and tensioners.

if you’re interested in reading the whole journey, i have kept it below. More upgrades to the gen 3 will be happening. Have a great one everybody!



Hi,

2004 dodge ram 1500 4.7

I am new to this platform and have an issue that just started happening out if nowhere(like most car problems). I noticed that yesterday when I started/cranked the car, I would hear a knock around the passenger side. The knock would only be heard then only but then I noticed the car would run like crap, especially over 2000rpm, i would hear more knocking like a misfire. There is no codes being thrown besides the check gage oil pressure sensor, which i have a replacement for. I’ve done some digging and I’ve heard many things that can be the issue.

1) timing tensioner is bad and/or
2) the lifters has gone bad

please let me know what you think can possibly be the issue. I just picked this up a few days ago and do not want to have to sell it for a loss.

thanks,
Roney
 

Last edited by roneytwinturbo; 12-03-2021 at 08:55 AM.
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Old 11-08-2021, 01:18 PM
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If I had those symptoms (knock and oil press light) I would take off the valve cover and see if there is sludge in my top end.
You could also examine the spark plugs for the passenger side and check for abnormal condition.
A mechanic's stethoscope is helpful in isolating the source of the knock. A two foot length of garden hose works good also.
 
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Old 11-08-2021, 01:29 PM
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Originally Posted by jrsick
If I had those symptoms (knock and oil press light) I would take off the valve cover and see if there is sludge in my top end.
You could also examine the spark plugs for the passenger side and check for abnormal condition.
A mechanic's stethoscope is helpful in isolating the source of the knock. A two foot length of garden hose works good also.
it really seems to me that these engines tend to have issues on the passenger side(unless people bring it up because it is easier to get to). I will comeback when i get to my truck and record a video on the initial start up. The low oil pressure is just the oil pressur sensor, which will be replaced soon.

thanks for your input
 
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Old 11-08-2021, 02:22 PM
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Have you noticed the engine running at slightly higher temp recently?
 
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Old 11-08-2021, 02:25 PM
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Originally Posted by jrsick
Have you noticed the engine running at slightly higher temp recently?
engine runs at normal temperature. Everything (at least on the dash) looks great. Battery, oil pressure and coolant temp all look normal.
 
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Old 11-08-2021, 05:25 PM
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Default Videos uploaded

Initial start up:

accelerating:
 
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Old 11-08-2021, 07:01 PM
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Getting any misfire codes?
 
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Old 11-08-2021, 08:44 PM
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Originally Posted by HeyYou
Getting any misfire codes?
i did not but this was what i got yesterday right when it all started going south. I was told these trucks do not take low battery voltage easily.


 
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Old 11-09-2021, 02:58 AM
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Sounds like detonation. Try any new gas stations lately?
 
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Old 11-09-2021, 06:35 AM
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Originally Posted by Prismatic
Sounds like detonation. Try any new gas stations lately?
no, I just got this truck for less than a week. Have not put new gas in it yet, will put in some newer gas and see. I will let it sit today and work on it tomorrow since i have tomorrow off.
 


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