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!
Bayou Goat Mounts

Reply
 
Thread Tools
  #1  
Old 03-21-2013, 10:36 AM
racerx37335 racerx37335 is offline
Dodge Ram Forum Newcomer
 
Join Date: Mar 2013
Posts: 5
Gender: Male
Vehicle: 2006 Ram 1500
Rep Power: 0
Rep:10
racerx37335 is on a distinguished road
Default 2006 Head Gasket Replacement

Replaced head gaskets on 2006 4.7 (had blown gasket at cylinder #8). Marked chains put back exactly as marked (never removed chains completely from motor). i did remove front cover and made sure all gears remained in original positions (crank, idler, cams). Truck started and ran PERFECT for 30-45 seconds until I decided to tach it up a small bit. Truck had great oil pressure etc... As soon as I touched the throttle the engine began to ramp and then shut down just like it was turned off. Will now try to start and run only if u hold throttle flap wide open. Verified timing still correct at cams/crank. Verified 60 psi fuel pressure. Right bank plugs immediately turn to black soot. Left bank plugs remain pearl white but gassy wet. Next step is to pull front cover and re-time using the factory marked links. All sensors look normal on scan-tool. Any ideas? All help is appreciated.

Jeff
Reply With Quote
Sponsored links
  #2  
Old 03-21-2013, 11:20 AM
RamTech's Avatar
RamTech RamTech is offline
Dodge Ram Forum Senior Member!

 
Join Date: Nov 2009
Location: Johnson City, TN
Age: 44
Posts: 12,120
Gender: Male
Vehicle: 2004 Dakota Club Cab 4X4
Trim Level: SXT
Color: Bright Silver
Engine: 2002-2008 226ci (3.7L) Magnum/PowerTech V6 215hp 235lb/ft
Rep Power: 14
Rep:1824
RamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant future
Default

If you've knocked off the timing, the intake valves can hit the pistons and bend. Did you tension the chains before starting the engine?
Reply With Quote
  #3  
Old 03-21-2013, 02:49 PM
racerx37335 racerx37335 is offline
Dodge Ram Forum Newcomer
 
Join Date: Mar 2013
Posts: 5
Gender: Male
Vehicle: 2006 Ram 1500
Rep Power: 0
Rep:10
racerx37335 is on a distinguished road
Default

If the timing did indeed move, I can tell you that it is no more than a tooth at each cam. I really don't think the timing moved. I have already took valve covers off and with the balancer on the TDC mark, the V8 on each cam was as close to being straight up as possible. The aggravating deal is that the V8 mark on each cam is slightly to one side of the 12 oclock position, but if you were to move the cam a tooth, then it is slightly to the opposite side of the 12 oclock position. There is no spot for them to be perfectly at 12 oclock. Motor appears to have all kinds of compression and will run and smooth out (no popping back through intake etc..), but will not stay running for long.
Reply With Quote
  #4  
Old 03-21-2013, 03:20 PM
RamTech's Avatar
RamTech RamTech is offline
Dodge Ram Forum Senior Member!

 
Join Date: Nov 2009
Location: Johnson City, TN
Age: 44
Posts: 12,120
Gender: Male
Vehicle: 2004 Dakota Club Cab 4X4
Trim Level: SXT
Color: Bright Silver
Engine: 2002-2008 226ci (3.7L) Magnum/PowerTech V6 215hp 235lb/ft
Rep Power: 14
Rep:1824
RamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant future
Default

One tooth off is all it takes to bend the intake valves. Did you use the dots on the sprockets and plated links on the chains to time it?
Reply With Quote
  #5  
Old 03-21-2013, 03:40 PM
racerx37335 racerx37335 is offline
Dodge Ram Forum Newcomer
 
Join Date: Mar 2013
Posts: 5
Gender: Male
Vehicle: 2006 Ram 1500
Rep Power: 0
Rep:10
racerx37335 is on a distinguished road
Default

I didnt take the idler and crank gear off. I left them in place and used a paint marker prior to disassembly and did use my paint marks to re-align on exact same teeth. I don't really think intake valves are bent because it runs very smooth for some short durations before it appears to flood out. It ran perfect for the first 30-45 seconds on the first crank. Any thoughts as to why soot on one bank and gassed up and white on the other? Could injectors be doing something crazy?
Reply With Quote
  #6  
Old 03-21-2013, 04:41 PM
RamTech's Avatar
RamTech RamTech is offline
Dodge Ram Forum Senior Member!

 
Join Date: Nov 2009
Location: Johnson City, TN
Age: 44
Posts: 12,120
Gender: Male
Vehicle: 2004 Dakota Club Cab 4X4
Trim Level: SXT
Color: Bright Silver
Engine: 2002-2008 226ci (3.7L) Magnum/PowerTech V6 215hp 235lb/ft
Rep Power: 14
Rep:1824
RamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant futureRamTech has a brilliant future
Default

Pretty unlikely unless they were commanded to by the PCM. The first thing I would do is verify the timing by pulling the front cover. You can have the balancer aligned, cams aligned and still be off on the crank sprocket.
Reply With Quote
  #7  
Old 04-15-2013, 03:07 PM
racerx37335 racerx37335 is offline
Dodge Ram Forum Newcomer
 
Join Date: Mar 2013
Posts: 5
Gender: Male
Vehicle: 2006 Ram 1500
Rep Power: 0
Rep:10
racerx37335 is on a distinguished road
Default

The problem turned out being the cam pin sheared off on the left cam. I can only assume that I didnt get it tight. It bent all the intake valves on that head. Got the head fixed. I got the pin out and put in a new pin from Dodge and then torqued the bolt to 90 ft lbs using torque and spanner wrenches,and "loctited" it. The motor cranks and drives good but does some funny stuff at idle. Main thing I notice is the tach is reading reallllly low. Appears to be even lower than the motor is actually running. The truck will die sometimes and it sounds funny on initial cranking but cranks back up and runs fine. Truck runs good down the highway. It has set a CEL. I will try to scan it in next day or two. Any guesses as to what problem is? I did install an Autozone cam sensor when I had the initial problem. Wondering if that could be the culprit. Maybe CEL diagnostics will tell me. Will keep you posted.


Jeff

Last edited by racerx37335; 04-15-2013 at 03:12 PM.
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


Advertisement






All times are GMT -4. The time now is 12:24 PM.


= 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