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Brandon
Dodge Dakota
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10/02/2007
07:48:33
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 Subject: '06 Dakota Engine Knock
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Didn't have any reply's in the V8 forum, so I will try here.
I have a '06 Dakota with the 4.7HO in it and for the last few months, on cold start up, the engine knocks or kind of sounds like a diesel. If goes away after a while though. I think someone on here might have talked about this before, but could I get refreshed on this issue. I bought it new in February, so I know I can take it into the shop and have them mess with it, but I am just wondering if anyone had this problem and what it ended up being, just so I am prepared when I do take it in.
Thanks
Brandon
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Kowalski
GenIII
10/02/2007
17:49:28
| RE: '06 Dakota Engine Knock
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I wouldn't waste any more time before bringing it in; or you might be explaining why you took so long to bring it to their attention if something seriously bad happens. This isn't normal or usual - probably why there hasn't been any replies. When something isn't right but still under warranty, about the only thing you need to be prepared to do is to expect them to fix it - but they might consider it partly due to your negligence if you keep running it like that until something major fails. You could help further the knowledge of the board if you let us know what they determine the problem to be - not everything can be diagnosed over the internet.
Lead, follow, or get out of the way
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Brandon
Dodge Dakota
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10/09/2007
13:25:08
| RE: '06 Dakota Engine Knock
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Well, I took the Dakota in last week for this issue and told them to keep it overnight and start it in the morning. Well, I get a call pretty early the next morning saying it was done. They could not replicate the problem of course. The guy did say that he noticed that I was using a Fram oil filter on it and he said that they let the oil drain back down or something like that. He said I should use MOPAR brand filters. Does this make any sense? Also, I do my own oil changes and the guy kind of yelled at me for not having one of those cling stickers in my window stating when it was due for the next oil change. I have the changes written down in a book. He stated that they do oil changes and maintenance stuff too without appointments. Well, that would be fine if it would cost me less there than to do it myself, but that would not be the case.
So, that is what I found out. It still does make the knocking sound, but maybe for the next oil change, I will try a MOPAR filter and see if that does anything.
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Hollis
Dodge Dakota
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10/09/2007
18:52:39
| RE: '06 Dakota Engine Knock
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I have an '01 4.7 and it does the same thing. When I first got it, with 110,000 miles on it, the radiator died, and it got pretty hot -not red line hot, but pretty hot. After I got it back from the shop, it made the knocking sound at cold start ups (for about 30 sec.) I took it back to the mechanic. They tore the whole bottom end down and replaced some bearings and seals, but, they said it didn't even need that. They said the engine was fine and to drive the he!! out of it. So, that's what I've been doing for about 20,000 miles now. The mechanic says that alot of late model engines do this. I just don't know if it did this BEFORE or AFTER the radiator went out!!! I don't know. It runs great, but that knocking bothers the he!! out of me!! Somebody please tell me what is really goin on!
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OBIO3
Dodge Dakota
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10/09/2007
21:00:58
| RE: '06 Dakota Engine Knock
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There are some engines that bleed down over night. Dakota isn't one of them with proper oil filter. Most cars/trucks will bleed down if parked for extended time. Fram filters are junk. If you go to a jippo lube joint, you will get junk filters and at times other things you didn't need or paid for and never got. MAYBE YOU HAVE SEEN THIS ON TV.
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Question?
Dodge Dakota
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10/10/2007
03:28:18
| RE: '06 Dakota Engine Knock
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What weight and type oil are you using?
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Brandon
Dodge Dakota
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10/10/2007
08:23:48
| RE: '06 Dakota Engine Knock
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I am using Valvoline 10w-40 in it. The truck only has around 6300 miles on it so far. I am wondering about the filter/oil though. I don't remember the truck making the knocking sound before I changed oil in it the first time. So, the first time I changed the oil, I put a fram filter on it and the Valvoline oil in it. It might have started after that, but I don't know exactly when it started.
So, what kind of filters would you guys recommend? Should I go right for the MOPAR filters or what? Does anyone know if you can get MOPAR filters anywhere else but through a dealer or MOPAR itself? What about oil? Any different oil I should be using?
Again, thanks for the help.
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MR.T
Dodge Dakota
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10/10/2007
12:48:12
| RE: '06 Dakota Engine Knock
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The 4.7 is idealy spec'd for 5W30,
cam chain tensioners and the valvetrain
are usually noisy on startup with anything thicker.
As for filter, stay away from FRAM!!
WIX or the NAPA Gold line is a much better choice.
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Dr. ZoSo
Dodge Dakota
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10/10/2007
13:23:02
| RE: '06 Dakota Engine Knock
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I hear the same thing everyday from you guys. The 4.7 take 5W30 blah blah blah.
The oil is too thin. I wouldnt use that in my Craftsman riding mower.
Brandon,
Yes, some engines do knock. I have a 07 Caliber now that knocks the valves around right after start up. I ran the light weight oil and the heavy weight. No real difference. The guy at the dealership said to run high octane gas only. I tried that once, on about 50% of my knock went away.
My advice, try the gas trick before you take it back. And concerning the oil, dont worry about the filter. Your not running a high performance motor. FRAM will work just fine. The mopar filter is a painted felpro oil filter.
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Curly
Dodge Dakota
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10/10/2007
13:37:42
| RE: '06 Dakota Engine Knock
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another good filter is purolators pure1
and i've heard to many bad things going on with
fram
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Mr.T
Dodge Dakota
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10/10/2007
14:38:50
| RE: '06 Dakota Engine Knock
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Filter choice is very important
as it incoporates an 'anti-drainback-valve'
inferior quality or design makes a difference here.. (cold start noises)
Thick vs Thin oil,
thick oil may show higher pressure on the gauge but good oil -flow- (thin) lubricates and cools better.
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Curly
Dodge Dakota
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10/10/2007
15:01:12
| RE: '06 Dakota Engine Knock
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every time i've used 5/30
i can hear ticking under the hood
I wont go thinner then 10/30 now
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Kowalski
GenIII
10/10/2007
15:18:20
| RE: '06 Dakota Engine Knock
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Dr.ZoSo - 5W30 is not too thin for a 4.7; you are mistaken. Mine is quiet; 8 years now and all it's ever been run on is 5W30. The 4.7 was designed with tighter tolerences than the older engines some of you are used to running thicker oils in.
Lead, follow, or get out of the way
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Dr. ZoSo
Dodge Dakota
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10/11/2007
10:18:28
| RE: '06 Dakota Engine Knock
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Kowalski,
As per your picture I can only assume you are located in colder waether climates.
You can safely use thinnner oils in colder weather vs hotter weather. When you are located in warmer parts of the country the rules change.
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Lee
Dodge Dakota
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10/11/2007
15:47:01
| RE: '06 Dakota Engine Knock
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I agree with Curly on both counts. I have used Purolator filters and Valvoline 10W-30 (per the owner's manual) for 7 years / 86,000 miles. I change the oil myself every 3,000 miles. The engine still runs like it did when it was new, and I have never heard any strange sounds from it.
Here's everything you wanted to know (and a bunch of things you didn't want to know) about oil filters:
http://minimopar.knizefamily.net/oilfilterstudy.html
Lee
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Kowalski
GenIII
10/11/2007
15:52:04
| RE: '06 Dakota Engine Knock
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We can get 100 degree heat in the summer here. With the 5W30 it will still pull a 5500 lb camper with the AC on over steep hilly terrain with no trouble or noise. Motors that recomend 5W30 instead of heavier weights are generally built to tighter tolerences and should do fine. I'm sure some of you will see a bit more heat than that; but it's not like it's cold here all the time...
Lead, follow, or get out of the way
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Mikey_MO
Dodge Dakota
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10/11/2007
17:47:44
|  RE: '06 Dakota Engine Knock
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My '01 RT has done this since new no matter what oil filter I put on it. I took it to the dealer once when I first noticed it. They could not hear it (of course). Even after they kept it over night. Now 117,000 miles later, it still taps when first started but is running strong. I would not be overly concerned unless it does this for more than about 5 seconds, if even that long.
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70below
Dodge Dakota
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10/12/2007
13:07:23
| RE: '06 Dakota Engine Knock
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What you are experiencing is probably "piston slap" . This is very common in GM LS series engines, and occurs in many newer style aluminum block engine designs to varying degrees. Many engines will wear somewhat on the piston skirts over the course of time, though still remain "within spec or tolerance". The "knock" or "tapping" occurs as the skirt turns slightly and contacts the cylinder wall. As the vehicle warms up, the piston will expand slightly and the oil will thicken causing the noise to quiet or go away all together. Most manufacturers will not cover this under warranty as they consider it normal wear, and as it normally will not cause a failure of the motor.
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Hollis
Dodge Dakota
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10/12/2007
22:43:04
| RE: '06 Dakota Engine Knock
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Thanks 70below. Finally something besides conjecture and opinion. I bet I've asked 50 people about this and all I've gotten was some variation of the same BS. I took it to a reputable shop a while back to get a tie rod end replaced, and the mechanic told me a "rod was knocking" and I needed to have the bottom end rebuilt. Of course he'd do it for about $3500.
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Opinion
Dodge Dakota
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10/13/2007
03:26:37
| RE: '06 Dakota Engine Knock
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"Finally something besides conjecture and opinion. I bet I've asked 50 people about this and all I've gotten was some variation of the same BS."
What did you expect from a message board? Just keep asking the same question until someone provides the answer you were looking for. As long as it makes you feel better!
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daddio
Dodge Dakota
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10/13/2007
09:47:08
| RE: '06 Dakota Engine Knock
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why don't you guys try putting a mechanical prssure gage on it to see whats going on with the oil pressure?
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