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post #1 of 26 (permalink) Old 02-07-2015, 11:05 AM Thread Starter
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2015 Sounds like a Diesel on start-up

I have a 2015 Tundra with the 5.7 engine. When I start the truck in the morning in Winter temperatures, the engine sounds like a diesel for first 10 miles or so. Sounds like valve train clatter. Anyone else experience this?
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post #2 of 26 (permalink) Old 02-07-2015, 11:13 AM
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The 5.7 is a pretty noisy motor to begin with, I think the cold tends to intensify it.


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post #3 of 26 (permalink) Old 02-07-2015, 11:22 AM
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How cold is cold? How loud is loud? My engine is quiet in the teens. Might compare it against another one at the dealer. It would be concerning to me. I would understand for a few minutes with a higher viscosity oils of the past. Normally lifters.... hydraulic or not will do it very shortly. Hydraulic should not do it very long with low viscosity synthetic.


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post #4 of 26 (permalink) Old 02-07-2015, 11:28 AM Thread Starter
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This morning temp was 34 and the noise was louder than when truck is warm. Noise gets louder during acceleration until temp gage is in the middle of the range. Truck has 4500 miles on it.
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post #5 of 26 (permalink) Old 02-07-2015, 11:31 AM
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This morning temp was 34 and the noise was louder than when truck is warm. Noise gets louder during acceleration until temp gage is in the middle of the range. Truck has 4500 miles on it.

That's not all that cold, Might want to have them take a look. At least that way you have documentation if anything goes wrong down the line.


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post #6 of 26 (permalink) Old 02-07-2015, 11:42 AM
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You lucky dog...got one of the test 5.7L diesel motors Toyota motor company put out.

-Ignition timing could cause this.

Are you running a good quality fuel?
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post #7 of 26 (permalink) Old 02-07-2015, 12:16 PM Thread Starter
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I always run BP fuel. I'm about due for oil change so I'll have them check it out.
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post #8 of 26 (permalink) Old 02-07-2015, 12:17 PM
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maybe the engine is cold?

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post #9 of 26 (permalink) Old 02-07-2015, 12:33 PM
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My engine sounds exactly the same when it's cold. I have a 2013. Engine oil level is fine. My dad has a 2007 sounds the same. It's fine as long as you have good oil pressure and it's running like it should. But if your worried take and have it looked at. I think all is ok.


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post #10 of 26 (permalink) Old 02-07-2015, 12:51 PM
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Some diesels are very loud.
Some diesels are very quiet.
Some gas engines are very loud.
Some gas engines are very quiet.

Generally, the Tundra 5.7 with cold engine start up is just a bit louder than a Ram Hemi 5.7. Most Ford and GM half tons are quieter on startup, both cold and hot.

On Tundra 5.7 cold start up the AIP will be active, so you will hear that; usually that noise last about 1-3 minutes. The clutch fan will be active so you will hear that; that should last about 2-5 minutes. Over the next 5 miles of driving it should then be a tad quieter than the Ram 5.7, but sill louder than most Ford’s and GM’s. Generally after 10 miles of driving I do not hear it much except when accelerating.

Also there is some valve train clicking or tapping that is very light and on my truck goes away within the first 5 miles or sooner.

It all seems normal to me.


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post #11 of 26 (permalink) Old 02-07-2015, 02:47 PM
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This is what mine sounded like about a week ago. It was pretty cold, close to zero. http://youtu.be/vglr0MuhY0Q

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post #12 of 26 (permalink) Old 02-07-2015, 03:55 PM
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This is what mine sounded like about a week ago. It was pretty cold, close to zero. http://youtu.be/vglr0MuhY0Q
Wow! Almost sounds like loud fuel injectors. Is that from under the hood?


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post #13 of 26 (permalink) Old 02-07-2015, 06:29 PM
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Had a knocking in mine that was worse in cold weather. Had about 33k miles when the noise became way too noticeable. Hoy Fox Toyota in El Paso did a fantastic job of identifying the problem. They said the #5 cylinder wrist pin (?) had too much clearance. Don't quote me on that...Anyhow, they ended up replacing the short block.

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post #14 of 26 (permalink) Old 02-07-2015, 06:57 PM
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I have a question for you guys, besides freezing temps, do you warm up your tundras a few minutes before driving it ? as a youngster I was always told you should never just start up and take off, so out of habit i always warm up my vehicles about 5 minutes before i take off. now that i have a new truck, i wonder if that's still relevant ? forgive me if thats a noob question


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post #15 of 26 (permalink) Old 02-07-2015, 07:03 PM
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BP....

I haven't bought anything from them in years.

Anyone remember the Gulf Oil spill?


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