DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum

Go Back   DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum > Dodge Ram Forum - Help Zone - Dodge Ram Problems, Complaints, & Solutions - Maintenance & Re > 3RD Generation Dodge Ram 2002 to 2008 Dodge Ram Trucks > Powertrain > 4.7L PowerTech V8 Specific Topics


Notices


Latest Vendor News
AutoAnything
Addictive Desert Designs!
United Radio
Bayou Goat Mounts

Reply
 
Thread Tools
  #61  
Old 11-03-2011, 05:21 PM
440Magnum 440Magnum is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jun 2011
Location: Texas
Age: 50
Posts: 76
Gender: Male
Vehicle: 2008 Ram 1500
Trim Level: Lone Star
Color: Red
Engine: 2008-???? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
Rep Power: 0
Rep:20
440Magnum is on a distinguished road
Default

Quote:
Originally Posted by SuperiorStyles View Post
That sounds like a good explanation for someone else in my case it was not.

Maybe not overheating, but I'm convinced the valve seat DID drop first and started everything else going bad.

Valve seats do sometimes drop out of aluminum heads for no dang good reason. Nature of the beast, and why I still prefer iron heads for trucks.
Reply With Quote
  #62  
Old 11-03-2011, 05:44 PM
SuperiorStyles's Avatar
SuperiorStyles SuperiorStyles is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jun 2011
Location: 305 MIAMI AKA ZOMBIELAND
Age: 31
Posts: 356
Gender: Male
Vehicle: 2002 Dodge RAM 4.8L 290ci
Trim Level: Quad Cab SLT
Color: Black
Engine: 2002-2007 287ci (4.7L) PowerTech V8 235hp 295lb/ft
Rep Power: 0
Rep:12
SuperiorStyles is on a distinguished road
Send a message via AIM to SuperiorStyles Send a message via Yahoo to SuperiorStyles
Default

Well known fact is that it does drop with a very noticeable knock also you would know when it does a good lack of performance, MPG and so on. Mine started with a light tap and goes away which the valve adjuster bore was cracked clicking back to back my MPG was good and my performance as well, My compression was right on the dot and my Dyno run proved that there was no loss. As the Time passed the valve adjuster failed causing the problem on the weak OEM design of the Cylinder Head. My engine never Overheated and always was taken care of. Not all tap,knocking and failures are caused by the same thing but they all have something in common it needs to be addressed and get fixed asap which is my point in all this I posted.
Reply With Quote
  #63  
Old 11-04-2011, 03:36 PM
440Magnum 440Magnum is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jun 2011
Location: Texas
Age: 50
Posts: 76
Gender: Male
Vehicle: 2008 Ram 1500
Trim Level: Lone Star
Color: Red
Engine: 2008-???? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
Rep Power: 0
Rep:20
440Magnum is on a distinguished road
Default

Quote:
Originally Posted by SuperiorStyles View Post
Well known fact is that it does drop with a very noticeable knock also you would know when it does a good lack of performance, MPG and so on. Mine started with a light tap and goes away which the valve adjuster bore was cracked clicking back to back my MPG was good and my performance as well, My compression was right on the dot and my Dyno run proved that there was no loss. As the Time passed the valve adjuster failed causing the problem on the weak OEM design of the Cylinder Head.
You might be completely right, but here's why I'm not convinced. If the hydraulic adjuster bore actually failed FIRST as you suggest, then when did the valve seat drop out? Because if the follower bore broke, the the valve didn't ever open again to LET the seat drop out of the head. And I think its pretty unlikely that both events happened on exactly the same turn of the cam. The only way to sort out what happened in those last few milliseconds was that the valve seat dropped, propped the valve open, the valve not returning to its full-seated position let the roller follower move sideways off the lash adjuster, then the cam lobe came around again and smashed the follower while it was sitting half-off the adjuster, breaking out the bore in the head casting with an unnatural side-load on the adjuster.

How would that explain the light tapping you heard other times? I don't know for sure- could be typical 4.7 slow pump-up of the lash adjusters. Could be that the valve seat was able to drop down a millimeter or two but not come all the way out, and then stick firmly back in the head and everything would run fine until the next cool-down cycle.

The other problem I have with the theory that the light tap was the bore beginning to crack: why would it ever STOP the light tapping once that adjuster bore began to crack?

Just food for thought- none of it really matters now. And I agree that persistent tapping probably should be watched for other problems.

One question for you- how did the cylinder walls in your original engine look? I know 150,000 miles is around the "might as well do it all" point, but since people report running these 4.7s out to 300,000 miles or more without even burning oil, I'd expect the bottom end to still look very good.
Reply With Quote
  #64  
Old 11-04-2011, 10:58 PM
SuperiorStyles's Avatar
SuperiorStyles SuperiorStyles is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jun 2011
Location: 305 MIAMI AKA ZOMBIELAND
Age: 31
Posts: 356
Gender: Male
Vehicle: 2002 Dodge RAM 4.8L 290ci
Trim Level: Quad Cab SLT
Color: Black
Engine: 2002-2007 287ci (4.7L) PowerTech V8 235hp 295lb/ft
Rep Power: 0
Rep:12
SuperiorStyles is on a distinguished road
Send a message via AIM to SuperiorStyles Send a message via Yahoo to SuperiorStyles
Default

Good theory but no the Valve seat came off during the Spring and Valve operation when the adjuster got stuck on the broken casting causing the camshaft to push and force the rocker arm into the valve causing the spring to bottom out completely and cracking the spring and bending the valve also causing the the Guide to turn into the valve seat which lead to the seat hanging to be pushed out of its Position. The Tapping in the morning was from the Crack on the adjuster bore due to the aluminum head heating cycle at normal temps the metal expanded and the crank close gap. That was in my case in other people case it could just be leaks in the Exhaust gasket or like you said slow oiling to the adjuster.

The cylinder walls were in perfect condition as for all the rings and bottom end. No signs of the Engine having neglect also no sludge anywhere thanks to the Syn oil.
Bearing had no sign of wear or abuse.
Reply With Quote
  #65  
Old 01-10-2013, 07:36 PM
bigmike19956's Avatar
bigmike19956 bigmike19956 is offline
Dodge Ram Forum Newcomer
 
Join Date: Mar 2009
Location: Lower Slower Dela-where?
Age: 56
Posts: 21
Gender: Male
Vehicle: 2002 Dodge Ram 1500
Trim Level: Sport
Engine: 2002-2007 287ci (4.7L) PowerTech V8 235hp 295lb/ft
Rep Power: 0
Rep:10
bigmike19956 is on a distinguished road
Default

I had a similar problem recently. At cold start up rocker arm actually fell off at start/idle. Had shop put rocker back on, lasted 250 miles, and happened again.Local machine shop said valve seats drop and hold valve open slightly causing rocker to fall off. Also talked to Dodge tech, and he said the valve seat issue would happen on warm engine, not cold. He advised me to replace lifters. Did this and have a very slight tick on cold start but goes away quickly. Knock on wood this has fixed my issue for now.
Reply With Quote
  #66  
Old 01-25-2013, 08:29 PM
bigmike19956's Avatar
bigmike19956 bigmike19956 is offline
Dodge Ram Forum Newcomer
 
Join Date: Mar 2009
Location: Lower Slower Dela-where?
Age: 56
Posts: 21
Gender: Male
Vehicle: 2002 Dodge Ram 1500
Trim Level: Sport
Engine: 2002-2007 287ci (4.7L) PowerTech V8 235hp 295lb/ft
Rep Power: 0
Rep:10
bigmike19956 is on a distinguished road
Default

Well update folks. I now have the heads off and at the machine shop. The machine shop says they cannot find anything wrong with the heads. Seats are not loose, valve guides are in specs, etc. What else can there be??? The machine shop is saying Dodge says there is a fuel issue on certain cylinders causing lean fuel and heating that cylinder, making the valve stick, and making rocker fall off. That would make sense IF the rocker fell off when the engine is warm. The rocker falls off right after cold start. The new lifters did quiet the tap down to just a few seconds. I am so confused, and so is my mechanic. Also, local Dodge dealer doesn't want to share any advice, they're answer is bring it in and let us look at it.
Reply With Quote
  #67  
Old 01-26-2013, 09:19 PM
snrusnak's Avatar
snrusnak snrusnak is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2011
Location: Orlando
Age: 27
Posts: 13,381
Gender: Male
Vehicle: 2010 Dodge Ram 1500
Trim Level: SLT
Color: White
Engine: 2008-20?? 287ci (4.7L) PowerTech V8 310hp 330lb/ft
Rep Power: 12
Rep:1385
snrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud ofsnrusnak has much to be proud of
Default

I don't understand why people like chasing ghosts. Not to be a jerk but:

THE LASH ADJUSTERS ARE HYDRAULIC. THEY NEED A LITTLE TIME TO GET PRIMED WITH OIL(KEEP IN MIND THEY ARE AT THE HIGHEST POINT ON THE ENGINE).

Once they are primed the lash closes and the noise goes away. It's really NOT an issue 99.9% of the time.
__________________
Sean

Breathing in and out is good enough for me.
Reply With Quote
  #68  
Old 01-30-2013, 07:32 AM
SuperiorStyles's Avatar
SuperiorStyles SuperiorStyles is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jun 2011
Location: 305 MIAMI AKA ZOMBIELAND
Age: 31
Posts: 356
Gender: Male
Vehicle: 2002 Dodge RAM 4.8L 290ci
Trim Level: Quad Cab SLT
Color: Black
Engine: 2002-2007 287ci (4.7L) PowerTech V8 235hp 295lb/ft
Rep Power: 0
Rep:12
SuperiorStyles is on a distinguished road
Send a message via AIM to SuperiorStyles Send a message via Yahoo to SuperiorStyles
Default

Many People have a Issue with the Ticking but the Only solution to getting rid of the Noise is replacing the Valve adjusters. There are no fluids that will help and no oil that will help I tried it all before my head failure. Ever Since I did my valve adjuster I hear no ticking or tap in the morning at all thank god and it's been 2 years. It cheaper to Change them now then wait later when they lock up. It's up to some of you to decide what you want and how fast you wanna solve it.
Reply With Quote
  #69  
Old 02-07-2013, 11:29 PM
02Kingstonram's Avatar
02Kingstonram 02Kingstonram is offline
Dodge Ram Forum Junior Member
 
Join Date: Jan 2013
Location: Kingston Area
Posts: 47
Gender: Male
Vehicle: 2002 Dodge Ram
Color: Red
Engine: 2002-2007 287ci (4.7L) PowerTech V8 235hp 295lb/ft
Rep Power: 0
Rep:10
02Kingstonram is on a distinguished road
Default My Ticks are gone!

Try Amsoil Synthetic! Worked for me. And change your PCV valve while your at it!
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
How often do we pay extra for things and not even know we did? ArmyofOne Dodge Ram General Discussion 1 06-01-2011 01:08 AM


Advertisement






All times are GMT -4. The time now is 11:07 AM.


= Copyright RamForumZ.com a Gigathreads.com Network Site =Ad Management by RedTyger
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
vB.Sponsors


=Gigathreads Network=
CLUBS MOPAR NATION DSM GPMM MAMM JAM
DIESEL Diesel Forum      
CHEVY Chevy Camaro Forum Chevy Volt Forum    
CHRYSLER Chrysler 300C Forum      
DODGE Dodge Avenger Forum Dodge Caliber Forum Dodge Challenger Forum Dodge Charger Forum
  Dodge Circuit Forum Dodge Hornet Forum Dodge Magnum Forum Dodge Nitro Forum
  Dodge Ram Forum Dodge Dakota Forum Dodge Durango Forum Dodge Dart Forum
FORD Ford Raptor Forum Ford F150 Forum Ford F100 Forum  
JEEP Jeep Forum      
PONTIAC Pontiac G8 Forum      
SRT SRT Viper Forum SRT Cuda Forum