| From | Message |
ChunkMonk
Dodge Dakota
JOIN HERE
5/13/2005
10:16:03
|
 Subject: Knocking 4.7L
IP: Logged
Message:
my motor has 80,000 miles on it, I change the oil every 3,000 miles, I just changed it yesterday.
when I started it up last night when I got off work, It knocked for about 30 seconds, then it stopped knocking and all I could hear was the normal Ticking I ussually hear.
I checked my oil, and it is about a half an inch under the safe line, BUT the Add oil line is not visible yet.
is this knock caused by my oil Change?
should I add a little more oil to get it to the safe line?
IT is not burning oil, and from what I can tell it is not leaking it either.
any suggestions why this motor is knocking?
2001 Dakota CC 4x4 Manual 3.55 4.7
HO cams, FIPK II, Headers, 70mm TB, Flowmaster 40
|
OBIO3
Dodge Dakota
JOIN HERE
5/13/2005
14:07:57
| RE: Knocking 4.7L
IP: Logged
Message:
Two thoughts and almost without question one has to be correct > You eather put a fram filter on (known to have bad bypass valves) or you just got a defective filter with a bad valve allowing your engine oil to drain down while sitting a spell >
|
Figols
Dodge Dakota
JOIN HERE
5/13/2005
14:42:45
| RE: Knocking 4.7L
IP: Logged
Message:
I agree with what OBIO3 said as a possiblilty, but the bigger issue sounds to me to be your one or more of your hydraulic valve lash adjusters. It seems to be another common Dakota issue. Mine have been tapping for about 25K miles now (now at 82K miles). Oil & oil filter brand made no change. They got a lot better after running some Auto-rx through the system, but the tapping is still there to some degree. I bought a set of new adjusters (Dodge only part!), but I haven't gotten around to putting them in yet. I even bought the special tool to install them with out removing the cams, but now I think I'll install a set of HO cams at the same time so I won't be needing the tool.
|
ChunkMonk
Dodge Dakota
JOIN HERE
5/13/2005
17:57:07
| RE: Knocking 4.7L
IP: Logged
Message:
I have been using FRAM the whole time owning this truck, I have never had this problem,.
Now I realize that it is more of a Tap or a Tick rather than a Knock.
My old Dodge Spirit Knocked because the seals were bad, valves bad, and it burned oil, and it was losing oil.
I have not seen any oil leaking from my truck, I checked the oil it is fine still in the Safe zone. I have not seen any oil burned out of my exaust, I haven't smelt it either.
the sound might be my header gaskets though.
I thought it was a knock because I was parked up beside a brick wall, so it reflected off it. I haven't heard it since last night, so I think all is ok.
if the FRAM filter caused this, I will use another brand in the future. any suggestions?
|
ChunkMonk
Dodge Dakota
JOIN HERE
5/13/2005
18:01:31
| RE: Knocking 4.7L
IP: Logged
Message:
also I would like to note that my Oil Pressure is still good, and there is no "check Gauges" light, or Engine light on.
It seems to be running fine now, but I will take into consideration what you all have said
Thanks.
|
OBIO3
Dodge Dakota
JOIN HERE
5/13/2005
21:19:50
| RE: Knocking 4.7L
IP: Logged
Message:
CHUNKMUNK > I respect your loyalty to FRAM filters > Worked my own shop for many years > I got horror stories about fram oil filter that would keep a guy awake for days > This includes a guy that distroyed 2 buick engines in about 30 minutes each engine > He bought a case a fram and turned out all but 2 in the case DID NOT have the csardboard they use in them glued together colapsing the filter material upon start and starved the engines > Just try to sue a big company like that > They can hold you off in court after court untill your living in the streets and can not fight no more > You lose >
|
ChunkMonk
Dodge Dakota
JOIN HERE
5/13/2005
22:06:19
| RE: Knocking 4.7L
IP: Logged
Message:
It seems that my motor made that sound again, and once it is warmed up, it doesnt do it? is this the Fram Filter causing this?
It is a louder Tap than just the Lifter Tick.
What is it?
I am not losing oil pressure, or burning oil.
|
GraphiteDak
GenIII
 
5/14/2005
00:03:27
| RE: Knocking 4.7L
IP: Logged
Message:
OBIO3, when you say Buick engine. I assume you mean like a 3.8 V6 or others they made with the EXTERNAL oil pump???
Them 3.8's SUCKED for priming the first time too. You had to PACK them gears with grease, (or I think we used petroleum jelly?) when you first assemble one of them ba$tard engines. Otherwise it ran without EVER pumping oil, then the KNOCK and it's too late! new engine needs new crank and bearings!
|
GGalarmtec
Dodge Dakota
JOIN HERE
5/14/2005
00:36:37
| RE: Knocking 4.7L
IP: Logged
Message:
Sounds like piston slap to me. Motor warms up the pistons ( GROW ) the knocking goes away.
People with heavy foots often will put the TB to the floor just after starting a cold motor. The pistons have not grown Motor still cold. This will cause heavy piston skirt wear. To the point where the pistons slap when cold.
You guys want good oil filters try wix.
02 QC 4X4 Ported/polished TB .76Volts Gasket matched intake removed fan true cold air K and N drop in TQ. requist 180 Stat.
96 ZR-1 Vette 350 4 cams 32 valves 16 injectors 6 speed Borla cat back 475 hp high 11's low 12's all day long top speed 171 that I know of 25 MPG @ 65 MPH
|
OBIO3
Dodge Dakota
JOIN HERE
5/14/2005
00:43:04
| RE: Knocking 4.7L
IP: Logged
Message:
There's been thousands of engines go through my mind over 45 years > All I recall is the engines were V8's these engines were not disasembled > they were out of totaled cars > they were run tested and compression tested > and checked for proper oil preasure before being stored inside and wearing an ID tag with the information on them > when the first one blew it was assumed it had been a bad engine that got mismarked some how > For the seconed install Shorty asked to be presant at start up > As the story goes, oil preasure was instant and stayed very high till the knocking started > was to late then > so they cut a new filter open and it was bad > keep cutting and only 2 was good in the case > end of story
|
ChunkMonk
Dodge Dakota
JOIN HERE
5/16/2005
13:35:21
| RE: Knocking 4.7L
IP: Logged
Message:
Well, Fellas, My motor is not Knocking anymore, just the usual Lifter Tick that Dodge Motors have after a long while.
It must have been a fluke, even when I start it up in the morning, it doesn't do it, si I guess all things are good,
next time I change my oil, I will use a K&N Filter just to be on the safe side.
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Optional
All visitors are allowed to post messages
|
