Turbo Issue - Ford Powerstroke Diesel Forum
 1Likes
  • 1 Post By schlutzer
 
LinkBack Thread Tools Display Modes
post #1 of 8 Old 04-28-2014, 09:27 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Sep 2012
Posts: 3
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Turbo Issue

Recently my truck (03, 7.3) has been stuck at 7-10 psi boost while driving on flat road at about 70-75 mph. In the past I would see no boost while just cruising on level ground. This is causing my mileage to decrease from 23-25 to more like 10-12. I replaced the turbo, and whole motor in fact, about 10K miles ago. It has been doing this for about 3500 miles now. My thought is it has something to do with the wastegate not function correctly. Has anyone experienced anything similar? Where should I start looking for the solution?
pdelosa is offline  
post #2 of 8 Old 04-29-2014, 01:03 PM
Powerstroke.org Rookie
 
Join Date: Apr 2014
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Removed turbo intake searching for cause of leak. Found oil puddle up in valley of the 7.3 block. Can't seem to locate the source of the oil leak. 99 Ford F250 Powerstroke. Motor has 88,000 miles on it. Any suggestion to look for source of leak.
joblue1 is offline  
post #3 of 8 Old 04-29-2014, 10:45 PM
Compression Ignition Addict
 
timmyboy76's Avatar
 
Join Date: Aug 2010
Posts: 1,891
Thanks: 0
Thanked 20 Times in 20 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
see if redline to wastegate is hooked up

99.5 x-cab 7.3l, 6spd, 161k miles.....
timmyboy76 is offline  
post #4 of 8 Old 04-29-2014, 11:50 PM
Compression Ignition Addict
 
schlutzer's Avatar
 
Join Date: Apr 2012
Location: Stratford, Ontario
Posts: 2,437
Thanks: 34
Thanked 136 Times in 120 Posts
Mentioned: 0 Post(s)
Quoted: 18 Post(s)
Feedback Score: 0 reviews
At 70mph you should DEFINITELY be seeing boost. 7-10 psi sounds right on the money to me.

You also never got 23mpg. Famous 7.3's with tons of money spent to increase mileage don't reliably get 23mpg.

Please check out my 7.3 Enthusiast Facebook group! All are welcome! LINKY

schlutzer is offline  
post #5 of 8 Old 04-30-2014, 09:04 AM
Compression Ignition Addict
 
timmyboy76's Avatar
 
Join Date: Aug 2010
Posts: 1,891
Thanks: 0
Thanked 20 Times in 20 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
flat ground, at 70mph...2050rpm, 2# for me

99.5 x-cab 7.3l, 6spd, 161k miles.....
timmyboy76 is offline  
The Following User Says Thank You to timmyboy76 For This Useful Post:
pdelosa (05-04-2014)
post #6 of 8 Old 05-04-2014, 11:27 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Sep 2012
Posts: 3
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Checked red line to waste gate and it seems fine. Before the new motor I would run 0 psi going down the highway now I'm always seeing some boost. Doesn't seem normal to me but if that is what other people are seeing maybe it is more normal than I think. Sorry to disappoint all those "famous" 7.3's out there, but before my old motor went I was reliably and consistently averaging 28 mpg on the highway. Although to be fair, I rarely ever drove faster than 55 to accomplish that.
pdelosa is offline  
post #7 of 8 Old 05-04-2014, 12:35 PM
Compression Ignition Addict
 
schlutzer's Avatar
 
Join Date: Apr 2012
Location: Stratford, Ontario
Posts: 2,437
Thanks: 34
Thanked 136 Times in 120 Posts
Mentioned: 0 Post(s)
Quoted: 18 Post(s)
Feedback Score: 0 reviews
Lol... No you didn't, no 7.3 gets 28mpg. Are you going by the trip meter? Sounds like you are. They aren't even close to accurate.


And getting boost at 70 on the highway is correct. You're right in the powerband of the motor.

You replaced the turbo, if your old one had a worn wheel or you had a boost leak that would explain the difference between then and now.
RedneckYankee likes this.

Please check out my 7.3 Enthusiast Facebook group! All are welcome! LINKY

schlutzer is offline  
post #8 of 8 Old 05-04-2014, 02:22 PM
Compression Ignition Addict
 
blue99stroker's Avatar
 
Join Date: Oct 2011
Location: Chico, California
Posts: 5,124
Thanks: 18
Thanked 223 Times in 214 Posts
Mentioned: 3 Post(s)
Quoted: 165 Post(s)
Feedback Score: 0 reviews
i consistently see 5 psi of boost at 70 on flat ground.
i dream of getting 16 mpg let alone 28

99.5 f250 7.3 4x4 258k
PHP Phoenix, S&B CAI, 4" TBE, Hpx, Stancor, RR Billet Wheel, AIH Delete, Autometer Gauges, Leveling kit, Transgo kit, Warn Hubs, Int'l Up-Pipes, RR IC Boots, Non-Ebpv Pedestal, High Flow Outlet, RR OCR, 08 Tow Mirrors.

Dad-2000 7.3 109k miles, Autometer Gauges, Superchips 1705, AIH Delete, 6637, 4" TBE, BD Billet Wheel, TruCool Max
blue99stroker is offline  
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:
OR

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
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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

 
For the best viewing experience please update your browser to Google Chrome