Engine/Transmission (1994 - 1998) 300 injectors-->runs rough

[SWendell]

I put in a set of 300 injectors 4 days ago, upgrading from the stock injectors and am impressed with the low end response. But, I'm noticing a slight roughness in the motor when the driving with the throttle cracked less than about 1/4. As soon as I open her up... . smooths out and pulls real nice. Around town its annoying, almost feels like driving over slight washboard, but its from the motor.

I have bled the lines and given some time to work any air left in there. And yeah, I know, shoulda got the 370s..... need to buy more air first, though... ... ... ... . these 300s were cheap and I haven't added anything to the truck in months. Couldn't stand it!Oo.

Ideas?? Or is this typical of the 300s?

--Scott

 

[vssman]

I used to have 300's and they ran great. How does it idle? If it's rough as well, then CAREFULLY loosen the fuel line to each injector one at a time. The one that doesn't cause it to run even rougher is the suspect one. Keep in mind that the fuel is under high pressure, so safety is a must.