Rocker Arm Bridge Fell Off?? - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-01-2014, 08:17 PM
Powerstroke.org Rookie
 

Join Date: Apr 2014
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Exclamation Rocker Arm Bridge Fell Off??

Have a 2010 6.4L, EGR/DPF deleted, exhaust, tuner, couple other things.

Couple weeks ago the idle started going funky and revving a bit, non-rhythmically. I cold start her a couple days ago and a loud popping noise shows up out of no where. The noise quiets down with some throttle, & with enough stops completely. I opened the hood and it's coming from the intake area. Read the code off my tuner and it's a P0284: cylinder 8 contribution/balance. I figure it must be something to do with the #8s intake or exhaust valves.

So I dig into her and eventually get the valve cover removed. The rocker arm bridge is off of one side of the exhaust valves. The bridge looks fine, the rocker arm locks fine, push rod is straight as she could be, and no damage to the valve spring.

Am I being too optimistic figuring the bridge just "fell off"? Has this ever happened? Or is it the hydraulic lifter. What's my best plan of action? Should I rebuild Humpty and hope everything works out, or should I pull the heads?

Secondary question, I've heard the injector fuel lines need to be replaced once removed--is this true?

Any help is super appreciated.


Cheers,
SBH
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 04-07-2014, 06:07 PM
Powerstroke.org Rookie
 

Join Date: Apr 2014
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Some more digging...

I pulled the intake push rod the next day & it was bent to hell. I figured there was some chance it bent and the cylinder misfired and back-pressured the exhaust side to knock the rocker arm bridge off, so I bought a new push rod from Ford & torqued the rocker arms back on cylinder 8. I turned it over by hand and both intake & exhaust moved, but the exhaust side is lagging (the push rod isn't really pushing up against the rocker arm socket).

It's looking absolutely like a lifter at the moment... is there any chance the push rod bent first and knocked it off, or am I being too optimistic again?

Second question: assuming I'm SOL & have to pull the heads (going to attempt myself, cab down), what should I replace while I'm in there? I'm figuring at minimum I'll need/want upper gasket set, head studs, the lifters, and a set of chromoly pushrods. Should I replace the valve springs, too? Is there any worth to HD up-pipes (I have EGR deleted; there's also no chance of me sending my stock up-pipes in) or a down pipe?
Reply With Quote Quick reply to this message
  #3  
Old 04-08-2014, 06:43 AM
Compression Ignition Addict
 

Join Date: Oct 2010
Posts: 4,187
Thanks: 14
Thanked 61 Times in 60 Posts
Feedback Score: 0 reviews
I would do lifters, push rods and all new rockers. If you upgrade to the chromoly push rods then I would probably do the valve springs also. I would also do the 6.0 manifolds and up pipes or as you stated at least heavy duty up pipes. You could also throw a ported intake manifold on there while you are at it if funds permit.
Reply With Quote Quick reply to this message
  #4  
Old 04-08-2014, 03:05 PM
Powerstroke.org Fanatic
 

Join Date: Aug 2013
Posts: 133
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Yes, injector lines are a one time use item. Special install sequence as well. There is an install kit from Ford that has all the lines, injector O-rings and crush washers.
If the heads are coming off, have them checked out for cracking, and flatness and if they are good have bronze guides installed. good luck!
Reply With Quote Quick reply to this message
  #5  
Old 04-08-2014, 05:46 PM
Powerstroke Techie

 

Join Date: Nov 2010
Location: South Fayette/Pittsburgh PA
Posts: 5,224
Thanks: 22
Thanked 73 Times in 64 Posts
Feedback Score: 4 reviews
You'll probably find the bottom of the lifter gone and if it is there's a guarantee the cam suffered damage too.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Tags
6.4l, intake, popping, push rod, rocker arm

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
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

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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 08:35 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors