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Engine getting louder

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Old Mar 24, 2011 | 08:25 PM
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Engine getting louder

Just did an oil change at dealership 2 weeks ago, now the engine is starting to have a really loud rapping noise when i accelerate. It goes away but always comes back when the rpms drop to around 1300-1500. It reminds me of my 7.3 it's that loud, brought it to dealer they said it's a diesel. I checked the oil level and everything is fine, I'm stumped this has been the quietest diesel I have ever owned.
 
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Old Mar 24, 2011 | 08:50 PM
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Same thing happened to mine on the first oil change - (Not as loud as a 7.3, but considerably louder than when new.) I read that FORD adds a "charge" to the engine to quite it down at the factory, but I cannot find where I read it, nor can I find anyone that has any info on this. Apparently FORD adds a carbon additive to the oil to make it quiter. So if anyone has anymore info please enlighten us all.
 
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Old Mar 24, 2011 | 08:51 PM
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How many miles do you have on your truck? I have 7500 and one oil change and there is no noticeable difference in the sound of the engine. The dealer used 10-30 motorcraft semi-synthetic when he changed my oil.
 
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Old Mar 24, 2011 | 09:12 PM
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I was at 5k on first oil change now at 26+ and still same level of noise since first oil change - using Rotella-T 15W-40
 
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Old Mar 24, 2011 | 09:33 PM
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I have 13,000+ currently and on the third pan of oil/two changes.
It does get a little louder after the factory oil but I like it.
 
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Old Mar 24, 2011 | 09:34 PM
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Originally Posted by GMUGNIER
Same thing happened to mine on the first oil change - (Not as loud as a 7.3, but considerably louder than when new.) I read that FORD adds a "charge" to the engine to quite it down at the factory, but I cannot find where I read it, nor can I find anyone that has any info on this. Apparently FORD adds a carbon additive to the oil to make it quiter. So if anyone has anymore info please enlighten us all.
Ford makes an oil additive like you suggested... Just google Motorcraft XL-17. It contains carbon...
 
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Old Mar 25, 2011 | 12:07 AM
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engine noise

I also noticed the engine in my truck getting louder, I did the first oil change yesterday. As soon as I started it up with the new oil and filter, quiet as new. Used mobil1 5w-40.
 
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Old Mar 25, 2011 | 04:43 AM
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Originally Posted by Troy Buenger
Ford makes an oil additive like you suggested... Just google Motorcraft XL-17. It contains carbon...
I did find reference on several sites in regards to friction modifiers that are put in the break in oil, but the only one that I could find in a search is the XL-3 not the XL-17 - is there more than one?
 
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Old Mar 25, 2011 | 05:25 AM
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It sounds stupid but make sure you have enough oil in there. The sound of the motor should not change all that much, just a little hint of clatter and hum.

I did post somewhere a while back that after a few miles the engine does open up a bit and become louder as well, it's hard to justify with facts but I just have a hint of noise that was not there when she was new. It's just a diesel sound IMO. Logically, I would expect a louder engine sound when you reach 30K miles.
 
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Old Mar 25, 2011 | 07:12 AM
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Speaking of changes as you put more miles on. When I first got the truck, it was the smoothest truck I ever owned in terms of internal vibration. After the first thousand I began noticing more vibration through the steering wheel. Anyone else seeing the same?

As for engine noise, it is still the same, but I have yet to get to my first oil change.
 
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Old Mar 25, 2011 | 07:26 AM
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I noticed that on my truck, too. I attributed it to the tires "breaking in". When I had the new tires put on, the vibration got markedly better and hasn't come back.
 
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Old Mar 25, 2011 | 07:54 AM
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Originally Posted by djjoshuad
I noticed that on my truck, too. I attributed it to the tires "breaking in". When I had the new tires put on, the vibration got markedly better and hasn't come back.
I have noticed the tire thing too, but I was speaking of sitting at a red light and feeling more vibration through the steering wheel. When I first got the truck, it was velvetly smooth. Now, there is a dramatic increase in vibration felt through the steering wheel.
 
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Old Mar 25, 2011 | 07:57 AM
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ohhh no, I don't have that. at least I didn't before I read this. Now I'm sure I will feel it when I get in my truck for lunch
 
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Old Mar 25, 2011 | 08:00 AM
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Originally Posted by djjoshuad
ohhh no, I don't have that. at least I didn't before I read this. Now I'm sure I will feel it when I get in my truck for lunch
LOL! I'm bad, I know it. I just hate it when people do that to me!
 
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Old Mar 25, 2011 | 08:22 AM
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It will never be as loud as my Cummins LOL (good and bad at the same time).
 
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