6.5L losing power - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by Jasong, this thread has received 3 replies and been viewed 1976 times.

LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 05-26-2015, 08:56 AM Thread Starter
Junior Member
Jasong's Avatar
Join Date: Feb 2015
Location: Plant City Fl
Posts: 323
Points: 35,661
Thanks: 41
Thanked 26 Times in 25 Posts
6.5L losing power

On a recent towing trip that involved lots of hills it seemed I was losing power.
Here is the details: 1994, manual trans, good boost, no smoke,no codes, 140k miles, recent air filter, recent fuel filter. Factory exhaust. Ceramic piston injection pump.
Runs like a top on the flats, no grunt on any hill with the trailer. This seemed to get progressively worse.I had to pull the hill in the trailer park in 1st gear.
If anyone can help I'd sure appreciate it :-)
Jasong is offline  
Sponsored Links
post #2 of 4 (permalink) Old 02-10-2019, 03:03 PM
Junior Member
racer55's Avatar
Join Date: Oct 2010
Location: Scugog Island Ontario Canada
Posts: 149
Points: 13,331
Thanks: 0
Thanked 22 Times in 22 Posts
Lift pump working?
AC Delco OPS?

2005 Chev K3500 CCLB
racer55 is offline  
post #3 of 4 (permalink) Old 02-10-2019, 03:44 PM Thread Starter
Junior Member
Jasong's Avatar
Join Date: Feb 2015
Location: Plant City Fl
Posts: 323
Points: 35,661
Thanks: 41
Thanked 26 Times in 25 Posts
@racer 55 6.5s don't have lift pumps. Truck was sold.
Jasong is offline  
post #4 of 4 (permalink) Old 09-08-2019, 10:00 PM
Junior Member
KET19's Avatar
Join Date: Feb 2010
Posts: 80
Points: 69,959
Thanks: 13
Thanked 16 Times in 11 Posts
They do have.
KET19 is offline  

Quick Reply

Register Now

In order to be able to post messages on the Diesel Truck Forum - TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
8.3 Cummins losing power acesneights1 Medium and Heavy Duty 43 10-11-2014 03:07 PM
Truck losing power! 4swampin 2008-2010 6.4L Power Stroke 17 03-31-2011 05:59 PM
01 losing power HELP classic 1994-2003 7.3L Power Stroke 3 08-26-2010 03:54 AM
Tunes losing power??? :( PiRiPi 2003-2007 6.0 Tuner Forum 9 08-27-2009 05:41 AM
6.0 losing power maddogg1019 2003-2007 6.0L Power Stroke 18 01-22-2008 03:22 AM

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