Missfire? How can u tell? - 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 10-23-2010, 04:12 PM
Powerstroke.org Fanatic
 

Join Date: Sep 2007
Location: Martinsville
Posts: 124
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Missfire? How can u tell?

How can you tell if a cylinder is not firing? My truck has been idleing kinda rough and sont seem to have the power it use to? is it possible that a cylinder or mutilple cylinders are not firing? Will it throw it code or something?

Just dont seem like its got the power it use to. Im making 27lbs of boost still.

Only other thing its been doing is taking a few more cranks to get it started.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 10-23-2010, 06:11 PM
Compression Ignition Addict
 

Join Date: Dec 2009
Posts: 1,283
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
I would have a scanner put on it-a cylinder contribution test can't hurt as well
Reply With Quote Quick reply to this message
  #3  
Old 10-23-2010, 06:12 PM
Powerstroke.org Fanatic
 

Join Date: Sep 2007
Location: Martinsville
Posts: 124
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
One other quick question? It seems like when I take off from a light at when driving normal (light foot) I dont ever see more than 5 psi boost. I have to really get on it to get to 10psi (still not floored, just heavy footing it). There is a long steep hill by my house I can mash the pedal on and get up to 27psi..
And when I'm running down the highway at 65mph it seems like Im making 3or4 psi. ( all of this is unloaded). My up pipes are not leaking I checked. Maybe Im just being crazy but I'd like to know if this all sounds normal?
Reply With Quote Quick reply to this message
  #4  
Old 10-23-2010, 06:13 PM
Powerstroke.org Fanatic
 

Join Date: Sep 2007
Location: Martinsville
Posts: 124
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
What kinda scanner? OBS2? and I guess Im going to have to look up a cylinder contribution test and see how or who can do that for me if I cant do it my self.
Reply With Quote Quick reply to this message
  #5  
Old 10-23-2010, 06:16 PM
Compression Ignition Addict
 

Join Date: Dec 2009
Posts: 1,283
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
It sounds close-maybe a little low at 65,but I haven't checked mine unloaded at that speed-always been loaded since gauge install.
27 sounds kinda high,what year 7.3?

Our trucks won't read OB2-you need to take it to a Ford dealer,a qualified diesel shop (if on is near you) or purchase the AE software-a regular scanner won't work.

Last edited by icysmooth; 10-23-2010 at 06:25 PM.
Reply With Quote Quick reply to this message
  #6  
Old 10-24-2010, 06:42 AM
Powerstroke.org Fanatic
 

Join Date: Sep 2007
Location: Martinsville
Posts: 124
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
its a 2003 and I have Dp tuner on 80hp eco, I have deleted my ebpv, put a 4" turbo back on and have a turbo-master wastegate controler. I said 27 but its prob only 25psi and it only does it for a second unitl it shift. I havent had a chance to pull anything scence I have done everything. It just seems a bit sluggish, maybe its just me. Some days it seems to run like a 1000hp drag car and somedays it runs like a prius.. lol
Im going to find a good dealer ship and take it there. Im also going to order one of the new black cps sensors and change it first. The other day i went to get out to get something out of the bed and it died. I thought I bumped the key or something, but after reading some other post it sounds like my cps is acting up and it does take a few seconds to start up.
Thanks for your help.
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:
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

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 09:05 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