Help - Diesel Truck Forum -
Thread Details Posted by stock9512valve, this thread has received 4 replies and been viewed 755 times.

LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 01-24-2008, 11:23 PM Thread Starter
Join Date: Oct 2007
Posts: 10
Points: 184
Thanks: 0
Thanked 0 Times in 0 Posts
Unhappy Help

Hey guys, I need some help/advice on what might be happening with my diesel. When I rev it in neutrel not under a load it feels like it is missing or not hitting smoothly around 1800 to 2200 and at around 2300 or so it seems to fall off when i'm in gear. I don't feel the miss when i'm in gear. Also when I lug it it seems to not hit right like a ricity - rack or john deere sounding kinda. I don't know how to explain that. Could this be a start of a clogged fuel filter? Injector Problem? HELP !!! By the way it is a '95 12 valve 5 speed :thanks:

Thanks for your help in advance,

stock9512valve is offline  
Sponsored Links
post #2 of 5 (permalink) Old 01-25-2008, 12:19 AM
Join Date: Nov 2007
Posts: 1,134
Points: 15,551
Thanks: 0
Thanked 5 Times in 4 Posts
In neutral, most 12v just don't rev well without some adjustments. Not sure though with it missing and problems in gear. Might be fuel filter, might be lift pump if you know your not getting fuel to the injectors. Just my thoughts.
imported_cummins_power is offline  
post #3 of 5 (permalink) Old 01-25-2008, 04:30 AM
Join Date: Oct 2006
Posts: 2,224
Points: 40,904
Thanks: 1
Thanked 37 Times in 25 Posts
Sounds like slipped timing or a fuel deficiency. Can you get a fuel pressure gauge? I'd start with a new filter. Then overflow, then LP, then check timing. A gauge would really help.
Dual K20s is offline  
post #4 of 5 (permalink) Old 01-29-2008, 08:07 PM
cumminsdiesel's Avatar
Join Date: Jan 2009
Location: SLC, UT
Posts: 148
Points: 30,166
Thanks: 17
Thanked 1 Time in 1 Post
When you are in gear it will start to fall off at 2300 rpm because its hitting the governor and it will not fuel as hard.

1997 Dodge 2500 4x4 auto, 4 inch exhaust, airaide intake, 0 plate, boost elbow, 4k gsk, trans, boost, and pyro gauges, built trans with billet converter, 16 cm exhaust housing.
1991 Dodge W250 4x4 manual, 3200 gsk, 4 inch straight piped, advanced timing 1/8", pump turned up all the way.
1997 F-250 Power Stroke-manual trans, 4" exhaust, TS 6 position chip with PHP Tunes, DIY intake, shimmend regulator.
cumminsdiesel is offline  
post #5 of 5 (permalink) Old 01-29-2008, 11:32 PM
Join Date: Dec 2008
Posts: 148
Points: 1,066
Thanks: 0
Thanked 0 Times in 0 Posts
When you are in gear it will start to fall off at 2300 rpm because its hitting the governor and it will not fuel as hard.
Unless you have pissed with the governor I doubt it. With my experience I had a 2900 rpm sputter and a lift pump and overflow spring fixed it but could be timeing as well.
cumminsram is offline  

Quick Reply

Register Now

In order to be able to post messages on the Diesel Truck 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:
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

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