Bad Idle

[WALKERPLAY]

Went and have a scan run on it , said that number 3 injector was bad and number 7 was weak. So i replaced both of them. Starts and run fine idleing. but going down the road it run like very rough. but when you get above 2000rpm it run alittle better. any help thanks

[klhansen]

Welcome to TheDieselStop

Are you getting a Check Engine Light? Since you had injector work done, they may not have gotten one of the injector harnesses securely connected under the valve covers.

How many miles has it been since you had the injectors replaced? Doing that introduces air into the HP oil system, which takes a bit of time to work out. That can make it run raggedy for a while. The cure is to take it out and romp on it for about 20-30 minutes. That gets the air bled out of the system.

Or it could be another bad injector. Did they rerun the tests after completing the work?

[WALKERPLAY]

thanks for re: i changes the fuel fitler and cam senor still doing it. now when you put it in park the motor rev ups without pressing the pedal. i have romp on it trying to clean it up too no help