Sticking Valve? - 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 01-22-2010, 07:49 PM
Powerstroke.org Rookie
 

Join Date: Oct 2009
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Sticking Valve?

What started out as an intermittent tapping has now developed into an intermittent knocking.

A friend came over this evening to listen to the engine, he's used to be a diesel mechanic, so he's better as identifying good noises from bad ones. He thinks the noise is coming from the head and thought it may be a sticking valve.

He suggested I remove the valve covers and have a look to see if anything looks amiss.

He also suggested I might want to try a Seafoam treatment, he said there were pros and cons to it.

What would I be looking for if I took the valve covers off?

If it is a sticking valve what are the solutions?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 01-22-2010, 07:54 PM
shaking things up

 

Join Date: Jan 2009
Location: wexford-Pa
Posts: 3,650
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
dont put seafoam in your oil!!!!!!!!! it is not good for the heui system! put it in the fuel if you want it is ok there
Reply With Quote Quick reply to this message
  #3  
Old 01-23-2010, 12:59 PM
Powerstroke.org Rookie
 

Join Date: Oct 2009
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I went out again this morning to listen to the knock.

The engine sounded normal at idle. Only started to knock after a short drive.

It's aloud knock, but even trying to locate it with a wooden dowel was difficult. I don't think it's coming from the top of the engine, it seems to be coming from the back, lower down.

I'm thinking big end, I hoping it's something easier to fix, ideas?
Attached Files
File Type: avi truck2.avi (1.18 MB, 27 views)
Reply With Quote Quick reply to this message
  #4  
Old 01-24-2010, 08:27 AM
Banned
 

Join Date: Jan 2010
Location: Southeast Michigan
Posts: 779
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: -1 reviews
its tough to be sure but it almost sounds like a fuel knock. you have any smoke out of the tail? you have good oil psi and fuel psi? does this noise change will engine rpm or load, louder hot or cold? thanks
Reply With Quote Quick reply to this message
  #5  
Old 01-24-2010, 08:28 AM
Banned
 

Join Date: Jan 2010
Location: Southeast Michigan
Posts: 779
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: -1 reviews
i bet if you had a way to cancel some injectors you could pinpoint that noise to 1 cylinder.
Reply With Quote Quick reply to this message
  #6  
Old 01-24-2010, 09:43 AM
Powerstroke.org Rookie
 

Join Date: Oct 2009
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Thank you for the feedback, your thoughts are very encouraging, I really like this truck and the thought of an engine transplant or major overhaul are frightening financially, and depressing emotionally.

Yes I do have smoke from the tail pipe. It's grayish white, lots of it when it's idling cold, I smell unburnt fuel in the fumes. The smoke disappears quickly after driving for a short distance. I may get a single puff of smoke on starting after it's warm.

The increase in smoke and the noise seem to have gotten worse in conjunction with each other.

When I'm driving the truck the noise sound like a tapping, but it may be muffled out by all the other diesel noises and road noise.

I have not checked oil pressure or fuel pressure. Truth is I don't know how to do it nor do I have the gauges to do it. I have a Chilton's manual coming by mail, and I'll willing to learn how to do it.
Reply With Quote Quick reply to this message
  #7  
Old 01-24-2010, 10:17 AM
Powerstroke.org Rookie
 

Join Date: Oct 2009
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
One more fact to add.

The rpm at idle fluctuates between 645 - 725, the engine doesn't seem to stumble when driving.

A friend who supports the injector idea suggests I use an infared heat gun on the exhaust manifold for each cylinder, his suggestion is the coldest one is the bad injector.
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 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 08:58 PM.


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