LB7: Rough idle after new injectors

J

Jakekk1

New member
Aug 23, 2018
10
0
1
I’m loosing my mind. Just put LDS Reman injectors in the truck new high pressure lines and all. Now it is running extremely rough like it’s missing but when I rev it up to about 15k it evens out. It is throwing a ton of codes the first 6 are p0193, 484D, 5258, 5e64, 6a70, 767c. I dont know what to do. The first code seems to be a pressure issue. I have a lift pump and I let it run for a couple minutes after everything was hooked back up before I started it for the first time. Maybe I didn’t get all the air out of the system. Please help.


Sent from my iPhone using Tapatalk
 
ChrisPerry

ChrisPerry

...........
Apr 4, 2016
209
6
18
Ventura, CA
Check the plug on the fuel pressure regulator for the p0193 code.

What are you scanning the codes with? Is it a ppe by any chance? Reason I ask is my ppe will show like 40 gibberish codes after the real code.
 
DAVe3283

DAVe3283

Heavy & Slow
Sep 3, 2009
3,727
296
83
Boise, ID, USA
X2, that sounds like the fuel pressure regulator didn't get plugged all the way back in. Unplug it and re-plug it, listen for the satisfying "click" as it goes in. If that is unplugged, the fuel pressure maxes out, and the engine idles like ass.

Hopefully that's all it is!
 
J

Jakekk1

New member
Aug 23, 2018
10
0
1
ChrisPerry said:
Check the plug on the fuel pressure regulator for the p0193 code.

What are you scanning the codes with? Is it a ppe by any chance? Reason I ask is my ppe will show like 40 gibberish codes after the real code.
Click to expand...



I’m using my ats tuner.


Sent from my iPhone using Tapatalk
 
J

Jakekk1

New member
Aug 23, 2018
10
0
1
Thank you everyone for the advice. I am going to dig a little further into the fpr plug. Is there a way to test the regulator?


Sent from my iPhone using Tapatalk
 
J

Jakekk1

New member
Aug 23, 2018
10
0
1
Thank you everyone for the help. I just forgot to plug the fpr in. Runs like a top now


Sent from my iPhone using Tapatalk
 
zakkb787

zakkb787

<that’s not me...
Sep 29, 2014
2,340
52
48
Granite Falls NC
Wish it woulda been that easy for me. Before I realized it I had already driven it to a shop to have it necked out and everything. Ah the dumb years. Glad you got it fixed :thumb:
 
J

Jakekk1

New member
Aug 23, 2018
10
0
1
I’m happy to say I fixed one problem now it’s on to the next. I was driving the truck and I started seeing a white smoke behind the truck. Long story short it looks like it’s spraying fuel everywhere on passenger side it looks to maybe be the fuel filter or the rail side of the high pressure lines. But when it’s running it dumps fuel everywhere and fast.


Sent from my iPhone using Tapatalk
 
DuramaxRamRod

DuramaxRamRod

Member
Oct 11, 2014
148
12
18
NH
Jakekk1 said:
I’m happy to say I fixed one problem now it’s on to the next. I was driving the truck and I started seeing a white smoke behind the truck. Long story short it looks like it’s spraying fuel everywhere on passenger side it looks to maybe be the fuel filter or the rail side of the high pressure lines. But when it’s running it dumps fuel everywhere and fast.


Sent from my iPhone using Tapatalk
Click to expand...
I would check the injector lines at the rail. I've had one rattle loose and another because I didn't tighten it enough. Same symptoms you are having diesel everywhere and spraying a fine mist that looked like smoke. Its hard to see it at idle with the low rail pressure, I stood back and had someone rev the engine up to find it but you could also bump up rail pressure with efi live when idling it.
 
J

Jakekk1

New member
Aug 23, 2018
10
0
1
I found the leak it was my #6 high pressure line at the line side. It just needed to be re seated a couple times and knock on wood it’s ok now.


Sent from my iPhone using Tapatalk
 
You must log in or register to reply here.
Top Bottom