HELP 4.7 ticka ticka - Dodge Durango Forum and Dodge Dakota Forums
Register Home Forum Extras Website Features Timeslips Calendar Garage Auto Loans Search Today's Posts Mark Forums Read

4.7L/4.7L HO/4.7L Gen II Engines Questions regarding the 4.7L V8 engine

Dakota-Durango.com is the premier Dodge Dakota Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Rate Thread Display Modes
  #1  
Old 05-05-2006, 05:45 PM
Bo-Dak's Avatar
Bo-Dak Bo-Dak is offline
Registered User
 
Join Date: May 2006
Location: Virginia
Vehicle: 2001/Dodge/Dakota Sport 4x4
Posts: 70
Reputation: 10 Bo-Dak is just getting started
HELP 4.7 ticka ticka

Hiya Gang!

Ok heres the deal. 2001 Dakota Sport CC 4x4, 4.7L engine...top was rebuilt by the stealership under the previous owner. Ever since it was released from the local *clueless* 5 Star, it has had a bad tapping/knocking/pinging (and whatever other description you would like) in the engine bay. I can't pinpoint exactly where within the engine its comming from. While standing next to the truck with the hood up, it sounds like the intake on the passenger side.

Now I have read a zillion posts on this and I know it seems to be a somewhat common thing with these engines. With this in mind, I have read possible causes being:

1. Possible collapsed Lash adjuster.
2. Valve leaking down while sitting for a while.
3. The infamous "Belly Pan Gasket."
4. Noisey-clogged Injectors
5. Ignition Coils.
6. Loose or improperly adjusted "Rockers."
7. Exhaust Leak.
8. Flex bolts backing out????? (yeah read a post that said it was the cause)
9. Timing Chain.

With all these various possibilities, I am attempting to isolate the culprit. When I first bought the truck, this thing rattled like a Diesel. Since then, first thing I did was an oil change. It seemed to make no difference.

Symptoms: Cold start in the Morning....tap tap tap tap tap....I let the engine warm up at least 2 minutes, carefully watching the oil pressure gauge and keeping an eye on the tach. Now, after the idle returns to normal idle rpm's, the presure will very gradually back off from the high end of the gauge to the low end of the "normal" range. (01 doesnt have numbered gauges) The tap,knock,ping,thudding...stays in step with the motor. After engine is at operating temp, it's still there just not quite as loud. I have done the following steps to try an eliminate this:

A. Changed Plugs
B. Changed Air Filter
C. Cleaned Throttle Body, I.A.C., etc...
D. Ran an engine flush and changed the oil again.
E. Ran Seafoam in Crankcase *1/4 bottle*, Gas Tank *1/4 bottle* and ran some through the Throtte Body into the intake *used half bottle* as described on the can (didnt use the vaccum hose on the brakebooster...let it go in directly through the butterfly plate on the TB.)

I looked through the TB as so many have said to do with a flashlight. No oil pooling, in fact it was clean as a whistle. (did this before using the Seafoam gimmick, and before i cleaned the TB the first time)

This thing is driving me NUTS!!! I'm concerned because I love this truck...and I am worried that one day its gunna go BOOM and launch a piston into low orbit. Can you guys help out an old retired military fart and maybe give me some diagnostic "steps" to locate and tackle this issue?

I dont have a stethescope, and I have done the "stick your finger on the injectors" trick. The Injectors are probably the quietest parts on that engine.

P.S. No codes: "done the key on/off thing too"

Any and all "Constructive Advice" please!!!

Many thanks.....Bo-Dak
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 05-05-2006, 06:53 PM
Jecht's Avatar
Jecht Jecht is offline
Mods Addict
 
Join Date: Feb 2005
Location: Waynesboro VA.
Vehicle: 03 Dakota QC
Posts: 7,509
Reputation: 137 Jecht is a glorious beacon of lightJecht is a glorious beacon of light
I have heard the valve lash bleeds down and can cause a tapping sound on start up. have heard this has been a prob on the 4.7. people replace them and no more tapping sound. so maybe that. know its not a cheap fix but the most common thing out there.
Reply With Quote Quick reply to this message
  #3  
Old 05-06-2006, 08:10 PM
mopar3.0 mopar3.0 is offline
Registered User
 
Join Date: Feb 2006
Location: canada
Posts: 19
Reputation: 10 mopar3.0 is just getting started
leaky exhaust manifold?, the 4.7's are prone to warping
Reply With Quote Quick reply to this message
  #4  
Old 05-07-2006, 04:40 AM
na360rt's Avatar
na360rt na360rt is offline
I'm Retired!
 
Join Date: Aug 2005
Location: Massachusetts
Vehicle: none at the moment
Posts: 817
Reputation: 13 na360rt is just getting started
Send a message via AIM to na360rt
alrighty, well here we go. I got a 5.9L, so it's an OHV, not a SOHC, but I'll offer this anyways. I had some trouble w/ my 1.7 Roller Rockers (yeah, they're different from yours, but hear this out..). Installed the rockers, worked great...two weeks later, tap tap tap (they're suppose to be "noisy" rockers anyways, so I wasn't too worried). Anyways, readjusted the valve last and tightened down the rockers again, clean sounding, no noise. Two weeks later...yup..tap tap tap. So once more...I readjusted them, really tightened the bitches down this time. Low and behold two weeks later...tap tap tap. So basically now I'm just tired of buying new valve cover gaskets (they're not reusable...). I've lived with it for over 1000 miles and it's running great, always has, just been a little noisy. So I blame it on the fact that they're suppose to be "noisy" rockers.

Anyways, I said all that to say...my rockers get a little more quiet when the engine warms up as well. But like I said, you have a SOHC. But my advice, since you don't have "noisy" rockers, is to readjust your rockers, it's easy to screw them up, especially if some guy at the stealership was being rushed. Anyways, I vote to start w/ that and see where it takes you. But good luck, hope you get it figured out
__________________


BADASS PICS OF THE R/T

SOLD March 2010
Reply With Quote Quick reply to this message
  #5  
Old 05-08-2006, 11:44 AM
Bo-Dak's Avatar
Bo-Dak Bo-Dak is offline
Registered User
 
Join Date: May 2006
Location: Virginia
Vehicle: 2001/Dodge/Dakota Sport 4x4
Posts: 70
Reputation: 10 Bo-Dak is just getting started
Hi guys...

Thanks for the info and advice! I have been thinking about tearing into the valve area for a while now. Valave lash on these beasties can be a bear. But, I figure when I get the proper tools and some time to tinker...thats what i'll be doing next.

Thanks Bunches and I'll keep you all posted!

Bo-Dak
Reply With Quote Quick reply to this message
  #6  
Old 05-09-2006, 12:04 AM
Y2KOTA's Avatar
Y2KOTA Y2KOTA is offline
Old Timer
 
Join Date: May 2004
Location: Bradenton, Fl
Vehicle: 2000 QC SLT+ 4.7L Auto
Posts: 1,270
Reputation: 13 Y2KOTA is just getting started
Quote:
Originally Posted by Bo-Dak

3. The infamous "Belly Pan Gasket."

You can rule this out. 4.7L don't have them.




__________________

Donald Mallett, Bradenton, FL
Bronze Executive Director
Independent Associate
(817) 875-9812

All mods listed >>>Home of the Y2KOTA

Last edited by Y2KOTA; 05-09-2006 at 12:11 AM.
Reply With Quote Quick reply to this message
  #7  
Old 05-09-2006, 11:57 AM
Bo-Dak's Avatar
Bo-Dak Bo-Dak is offline
Registered User
 
Join Date: May 2006
Location: Virginia
Vehicle: 2001/Dodge/Dakota Sport 4x4
Posts: 70
Reputation: 10 Bo-Dak is just getting started
Talking MSG for Y2KOTA

Man! Thanks for the pics! I have been wondering what it looks like in there. Humm, now i no why the Felpro Intake Gasket looks so funky.
Reply With Quote Quick reply to this message
  #8  
Old 05-10-2006, 01:02 AM
Rob454 Rob454 is offline
Registered User
 
Join Date: Apr 2004
Posts: 3,844
Reputation: 34 Rob454 must have done something right
My tapping sound ended up being the #8 piston trying to come theough the block. The rings stuck and the piston got this horrnedous slapping. I ended up having to rebuild the whole motor
Rob
Reply With Quote Quick reply to this message
  #9  
Old 05-10-2006, 01:12 PM
Bo-Dak's Avatar
Bo-Dak Bo-Dak is offline
Registered User
 
Join Date: May 2006
Location: Virginia
Vehicle: 2001/Dodge/Dakota Sport 4x4
Posts: 70
Reputation: 10 Bo-Dak is just getting started
Rob454: OUCH! How long did it take you to figure out where the taping was comming frome? I ask cause mine seems to be all over the engine at one point or another.
Reply With Quote Quick reply to this message
  #10  
Old 05-10-2006, 01:53 PM
Y2KOTA's Avatar
Y2KOTA Y2KOTA is offline
Old Timer
 
Join Date: May 2004
Location: Bradenton, Fl
Vehicle: 2000 QC SLT+ 4.7L Auto
Posts: 1,270
Reputation: 13 Y2KOTA is just getting started
Quote:
Originally Posted by Rob454
My tapping sound ended up being the #8 piston trying to come theough the block. The rings stuck and the piston got this horrnedous slapping. I ended up having to rebuild the whole motor
Rob
How did you find out it was the #8 piston?
__________________

Donald Mallett, Bradenton, FL
Bronze Executive Director
Independent Associate
(817) 875-9812

All mods listed >>>Home of the Y2KOTA
Reply With Quote Quick reply to this message
  #11  
Old 05-11-2006, 01:33 AM
Rob454 Rob454 is offline
Registered User
 
Join Date: Apr 2004
Posts: 3,844
Reputation: 34 Rob454 must have done something right
Basically I had the same thing. jsut a ticking at first then later went to a knock. I was lisening with a mechanics stethoscope and the sound seemed to be coming from everywhere. That was until I got under the truck and started to lisen to the oil pan and where the tranny and motor meet and the sides of the block and thats where it was the loudest. I ended up going to a shop and had the guy pull the motor and tear it down. When he tore it down I went and looked at it and the piston was shaved on one side and the cylinder wall was scratched up. I ended up having to go .020 thou over and I had a hell of a time finding pistons. i ended up with some keith Black pistons cause that was all there was available. Cost was 350$ for the pistons alone. the whole motor rebuild was 3200$ which was a steal considering everyone wanted 4500 for the short block and the dealer ( who was smokin crack and shooting heroin) quoted me 8000$ to which i laughed and laughed and laughed. It was a slight knock more like a ticking at first so i didnt pay too much attention to it cause when it was under warranty i took it in and of course the dealer couldnt duplicate it or it was normal. well the ticking got louder and louder and louder. it took about 5 years to the point where when the motor was cold the thing sounded liek a freaking diesel. I jsut got tired of the noise thats why I fixed it. I was actively looking for a 4.7 but at the time nobody had one for sale at a decent price. i would of much rather have a 360 but when I got the truck the 360 wasnt available in the 4x4 for some reason
Rob
Reply With Quote Quick reply to this message
  #12  
Old 05-11-2006, 12:52 PM
Bo-Dak's Avatar
Bo-Dak Bo-Dak is offline
Registered User
 
Join Date: May 2006
Location: Virginia
Vehicle: 2001/Dodge/Dakota Sport 4x4
Posts: 70
Reputation: 10 Bo-Dak is just getting started
ROB454: Thanks for the info!! :biggthump Im sorry it seems you went through a load of crap but at least you got your Dak taken care of. Im finding more and more that I will endevor to stay away from the stealerships as it seems (so far) that my Dogs have more mechanical knowledge of these trucks than there mechanics do.

Humm, now ya got me thinking....could I be having a simular problem? This engine was rebuilt oh...3 months ago by the local 5 Star and its been doing this ever since the Original owner got it back. The original owner took it back to Dodge and got the standard "Oh thats normal and it will go away" speech.

I think what I'll do is go and find me a good mechanics stethascope and crawl around the engine and see what I can find.
Reply With Quote Quick reply to this message
  #13  
Old 05-12-2006, 02:03 AM
Rob454 Rob454 is offline
Registered User
 
Join Date: Apr 2004
Posts: 3,844
Reputation: 34 Rob454 must have done something right
There is no WAY that is normal. There is some ticking from the valvetrain You can also use a piece of hose for a stethoscope
Rob
Reply With Quote Quick reply to this message
  #14  
Old 07-26-2006, 08:00 PM
nhbdaddy nhbdaddy is offline
Registered User
 
Join Date: Jul 2006
Location: Cincinnati
Vehicle: 2001 Durango 4.7
Posts: 7
Reputation: 10 nhbdaddy is just getting started
Rob-

Was yours a constant tick, or would it go away after the motor warmed up? I have the tick on cold start up, but its gone after 5 minutes or so.
Reply With Quote Quick reply to this message
  #15  
Old 08-01-2006, 04:19 AM
Rob454 Rob454 is offline
Registered User
 
Join Date: Apr 2004
Posts: 3,844
Reputation: 34 Rob454 must have done something right
Quote:
Originally Posted by nhbdaddy
Rob-

Was yours a constant tick, or would it go away after the motor warmed up? I have the tick on cold start up, but its gone after 5 minutes or so.
It was a constant ticking that went up with the RPM. if I hit the gas the ticking got faster ( in the begining) but it wasnt any louder but later it got faster and louder.
Rob
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Dodge Durango Forum and Dodge Dakota Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 02:51 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
Copyright 2001-2010 Dakota-Durango Archive