6.0 rough idle after pull, need help

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Jul 6, 2023 | 09:09 PM

6.oh_Azzy

Thread Starter

1st Gear

Joined: Jul 2023

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6.0 rough idle after pull, need help

I’ve got a 2007 ford f250, with the infamous 6.0 that’s completely stock. I bought it a few months ago for my first vehicle. And now all of the sudden it’s having issues running. I would be driving around and then all of the sudden it starts to miss fire and fairly quickly get worse to where it wouldn’t run. I’ve replaced my filters and my fuel conditioner. And I’m still having the issue after a load is being put on the truck via hard acceleration. I’m starting to run out of ideas and need help. Thanks

Jul 7, 2023 | 12:18 PM

redford

FTE Leadership Emeritus

Joined: Sep 2000

Posts: 23,174

Likes: 1,678

From: Stephensville WI

Welcome to FTE. I moved your thread to the 6.0L Power Stroke engine forum. You’ll get some good assistance here.

Good luck with your repairs.

Jul 7, 2023 | 01:09 PM

Jokester00

Tuned

Joined: Oct 2022

Posts: 481

Likes: 334

From: The State of Confusion

The easiest way to troubleshoot these trucks is with a program called FORSCAN. You can get the Forscan Lite App for phone or the full Forscan program for laptop/tablet. What you need to pair it with is an OBDII dongle (BLUETOOTH for android phone/windows based device or WIRELESS for iPhone/iPAD/Mac). Just be aware, if you have an iPAD or Mac that you're going to use, the full Forscan program isn't supported by iOS devices, so you will need to download the Forscan Lite App from your play store or app store and use your iOS. If you have an android phone and a windows based laptop - you can download the full Forscan program and use it without issues. The full program is the best, but the app gets the job done as well...just with a few less testing items.

FORSCAN FULL PROGRAM:
Download FORScan

OBDII DONGLES:
iOS/Mac
https://bafxpro.com/products/wifi-ob...or-ios-devices
Android/Windows
BAFX Products® - Wireless Bluetooth OBD2 Reader / Scanner for Android Devices

You can also find these on Amazon too.

When you get everything setup, read the stored DTC's and post them here. Then post some values for the following truck parameters at KOEO (key on engine off) and when the issue is occurring.

Battery V
FICM MPower
FICM LPower
Fuel Pulse Width (aka Injector Pulse Width)
FICM Sync
Cam/Crank Sync (aka Sync)
RPM
IPR%
ICP
ICPvoltage
VRef Voltage
Would also like Fuel Pressure, but it requires an aftermarket gauge as the PCM doesn't monitor this value.

Forscan is a great program and you will use it time and time again as a monitor or troubleshooting tool!

My first thought is you have an injector that's leaking compression back into the fuel causing other injectors to misfire and eventually stalling the truck, but that's totally a guess based on your symptoms. Get us some data so we can start to eliminate possibilities.

-jokester

Jul 8, 2023 | 09:26 AM

IHateCommieCars

Logistics Pro

Joined: Jul 2014

Posts: 4,673

Likes: 531

From: Houston, Texas

Ditto jokester. But, your symptoms sound like what happened to me once. I had a bad injector that was leaking air into the oil rail. (if I'm describing this correctly). After sitting for a bit, it would start and idle somewhat normal, with only the one injector missing, but as it continued to run, or drive, especially with a load, the air leaked over to the next injector, then the next one, along that rail.

And my injector problem was caused by low fuel pressure. Which I didn't figure out until replacing injectors and having them blow again.